I got a kick out of this one. Uses an arduino as the controller.
https://www.instructables.com/id/Automatic-Faucet-Touchless-Using-Arduino-Wash-Hand/
I got a kick out of this one. Uses an arduino as the controller.
https://www.instructables.com/id/Automatic-Faucet-Touchless-Using-Arduino-Wash-Hand/

Nice build. I like the use of a tree trunk for the arm.
https://www.instructables.com/id/The-Skein-of-Pain-AKA-Mangonel-Torsion-Catapult/
Basically the author took an airgun, and added a bottle to it. Not sure I would do this, you can buy one like this for $18 at Harbor Freight.
https://www.homemadetools.net/forum/homemade-simple-sandblaster-video-77994?homelistings#post153124

These are some simple to use tinker boards that are great for kids. The author in this case basically made a breadboard out of magnets for the 5 end points on the board.
https://www.instructables.com/id/The-ThreadBoard-Microbit-E-Textile-Prototyping-Boa/

For those practicing kicks. This build can be easier to use over the standard stand as it can adjust in just about any field of play. You do not need a flat surface to set it up on.
https://www.instructables.com/id/DIY-Place-Kicker-Practice-Tee/

Well the bags are usually HEPA based. So I guess it would make an OK mask. Not so sure I would go thru all this effort to make one like this.

Bascially you are 3D printing out a template to start with. One thing that would be nice to add to the build is a hole count.

Nice build overall, I like how it is pretty straight forward to put together.

This one looks more like the doctor based masks. It seems a bit more complicated than what I would want to do for a mask.

Nice build. Seems a bit overkill but if you have someone sick in the house or lots of folks…
https://www.instructables.com/id/DIY-Easy-Non-Contact-Automatic-Hand-Sanitizer-Disp/