SoCraftastic tested six marker types on a non-porous surface to see which one allowed the ink to float on water. The effect is pretty cool with a stick figure. Read the rest

Most of us are pretty good at wrapping a cube or cuboid box, but this handy video shows how to wrap a bunch of weird shapes, including pyramids, cylinders, and those annoying cardboard-backed blister packs for things like tools and action figures.

I needed to wrap a popcorn tin the other day, and this was very handy. It looked way better than my gifts usually do! And as for opening the package itself, that's another matter.

• How to Wrap 10 Challenging Shapes! (YouTube / Paper Guru) Read the rest

Andy from How To Make Everything went out in the Utah desert, gathered up volcanic glass, then through trial and error learned how to make an Aztec-style edge weapon.

The episode includes an interesting history lesson from anthropologist Gilbert Tostevin at University of Minnesota, who shows Andy how Aztecs used a haft embedded with smaller obsidian pieces to make formidable weapons.

• Turning Volcanic Rock into a Blade that's Sharper than Steel (YouTube / How To Make Everything) Read the rest

YouTuber NileRed was curious about how lactose-free milk is made, so he did a little research and came up with this helpful explainer. Read the rest

Gabe at H.I.S Survival demonstrates the fascinating process of making chocolate from bean to bar. He also describes some of the many kids of cacao pods and has plenty of tips on how to improve the yields from each batch. Read the rest

Woodworker John Malecki created this amazing river table with a massive piece of gnarly claro walnut and a lot of elbow grease. The end result is worth all the effort. Read the rest

Plotters with precision cutters certainly make glass etching easier that making stencils by hand, but it's still very labor intensive. Read the rest

Peter Brown decided to dye some cotton balls, soak them in resin, then turn the resulting form on a lathe to make a delightful colored handle for a refurbished garden tool. Read the rest

Barry Lewis from My Virgin Kitchen decided to make clear potato crisps, and they look amazing, like little starchy dried jellyfish. Read the rest

Mike Boyd of Learn Quick shows how to tune your voice to the resonant frequency of a glass and break said glass using only the unamplified human voice. Read the rest

In an alliterative homage to Breaking Bad, Binging with Babish shows viewers how to make the dipping sticks that Walter never got, as well as some dangerously delicious candy meth. Read the rest

Nicky James Burch demonstrates her technique for making vibrant psychedelic liquid art with basic acrylic paint. Looks like a fun kids' project! Read the rest

Oil of wintergreen makes for lovely glowsticks, but the secret ingredient is the solvent used to create chemiluminescence. Read the rest

Lithophanes were originally bas-relief artworks made of translucent porcelain that let varying amounts of light through depending on thickness. Now they same effect can be created using a 3D printer and applied to anything from Wonder Woman images to personal photos. Read the rest

Jun from Jun's Kitchen has very well-behaved cats, even the new one they rescued. Here, he takes a break from cooking to show how they got so well-trained. Read the rest

This delightfully impractical gadget looks complicated, but can a price be put on the value of serving eggs with star-shaped yolks? Read the rest

Lucian Constantin's Motherboard guide to protecting your home router is full of excellent, nearly impossible-to-follow advice that you should follow, but probably won't. Read the rest