Magnets have some very interesting physical properties. Magnetic Games previously showed us how they can make each other vibrate. They’re back with three more minutes of neodymium magnets interacting with each other’s fields. That separator machine that works like a paper cutter is a cool idea.

This tiny keychain flashlight from YSMART has a quick-release feature that turns it on when you pop it off of its backplate. It has a strong magnet to secure it in place while letting you use it without having to keep the light attached to your keychain. The 130-lumen light is available in aluminum or titanium.

Sometimes, the best kind of lock is the kind that doesn’t look like a lock at all. B-Star Crafts shows off a simple, but effective method that keeps doors or drawers locked using hidden neodymium magnets. It’s a trick that’s frequently found in puzzle boxes but can be easily applied to furniture and cabinets as well.

The Fluidstance Wall adds a whiteboard wherever you need one. It has a double-sided dry-erase writing surface and is made from powder-coated steel so that magnets will stick to it. Its base has a storage area for pens, and it comes with one pen and a microfiber eraser pouch. Its writing surface measures 24″ w x 15″ h.

Magnet Tricks created a few cool kinetic sculptures using small neodymium magnet spheres and rods. They start spinning using air blown through a straw, and some of the designs incorporate colorful rods to create a rainbow effect as they get up to speed. They look easy enough to replicate using Neobuildr parts.

Electromagnets can be very powerful. They’ve even been used to get roller coasters and trains rolling and to launch fighter jets. Tom Stanton made a miniature system of homebrew linear synchronous motors which use electromagnetism to propel a small sled and launch various items including a hot dog and a paper airplane.

LEGO enthusiast Dr. Engine shows off a Technic machine that demonstrates how magnets can transmit energy through walls. Each of its spinning blades can turn without connecting to a central drivetrain thanks to magnetic fields. A gear-drive mechanism places each section in its precise sweet spot.

You can do all kinds of fun things with magnets, but we never thought of them as musical instruments. The guys from Magnet Tricks and Magnetic Games teamed up to create a series of sounds from magnetic vibrations, sampled them, then turned them into a synthwave track.

This compact driver features a durable aviation-grade aluminum body, along with magnetic storage for nine bits inside of its handle. The included 1/4″ bits are made from S2 steel alloy and fit into the tool’s horizontal or vertical driver sockets. The M-19 also doubles as a bottle opener and as an improvised fidget toy.

Daily Carry Company’s modern knife features a slick butterfly hinge design and a magnetic locking mechanism. Its blade is made from premium M390 chromium steel, while its body is machined from grade 5 titanium. It measures just 11mm thick, so it’s an easy everyday carry.

The Magnetic Games channel teamed up with the Magnet Tricks channel to create a series of fascinating demonstrations of how magnets interact as their attractive and repelling properties cause movements and vibrations in each other.

This sturdy pocket tool from EDC maker Teale Designs combines a substantial pry bar with vertical and 90º bit drivers. It’s made from 3/16″ grade 5 titanium and holds two bits in its center section using rubber O-rings. It also has a pocket clip and a built-in bottle opener. Includes T6 and T8 Torx bits.

Mechanical gears can change the speed or force by using different sizes and spacing of their teeth. But we had no idea that a similar result could be achieved by spinning discs embedded with different quantities and sizes of magnets. Magnetic Games shows off this surprising behavior in this neat physics demonstration.

These self-stick wall tiles have metal plates built into them, so you can attach magnetic accessories to them. They come in hexagonal and rectangular versions, along with a desktop model you can take with you. Accessories include storage boxes, a wireless charger, cable clips, pen holders, and more.

Mgear’s handmade gadget holster carries a small flashlight, a magnetically-attached multitool, and a key ring. It’s made from leather over a strong polymer core and includes both the adjustable-focus flashlight and folding steel multitool. Available in black or tan leather.

This yucky blob looks like something your dog might leave on the grass, but it’s actually a liquid robot that can be controlled by a human. AsapSCIENCE speaks with Professor Li Zhang to learn about his team’s so-called slime robot, how it works, and its potentially life-saving applications.

This powerful electric off-roader is one of the concepts headed to the 56th Moab Easter Jeep Safari. Its axial-flux electric motor cranks out 625 hp and 850 lb-ft. of torque, silently and effortlessly traversing rocky terrain. It’s 12″ wider than a stock 2-door Wrangler and has a 3″ lift kit, 20″ wheels, and massive 40″ all-terrain tires.

These pentagonal playthings have neodymium magnets embedded along their edges so you can snap them together into variety of shapes, including a dodecahedron. Each set comes with 12 pentagons, and the more kits you buy, the more complex the objects can get. Available in five colors.

Magnet fanatic Magnetic Games got their hands on 64 oversize 26mm (~1.02″) neodymium spheres. These giant-sized balls are much harder to work with (and more dangerous) than their smaller brethren, but they do look like fun. They’re not cheap, but you can buy some here.

Magnetic Games presents another wildly satisfying video. This time, he uses a bunch of spherical and tubular magnets to create a series of gradually more complex spinning kinetic sculptures. It’s equal parts ASMR, physics experiment, and visual fun.

UK shop ReadyPlayerTwo creates these nifty 3-dimensional logo signs inspired by classic video game and computer systems. Each one is 3D printed from PLA plastic to accurately replicate the original color scheme, and has neodymium magnets securely mounted inside.

Discovery UK digs into the How It’s Made archives for this look at the process that goes into creating magnets. After melting a cocktail of various metals in an electrical induction furnace, the fiery metal is poured into sand molds, then cooled, separated, and charged with multiple electromagnetic fields.

Keep your phone charged up on the go with this snap-on magnetic charging pack from HyperGear. The 5000 mAh pack is Apple MagSafe compatible and juices up phones and other gadgets quickly via its 20W USB-C and 18W USB ports.