Tell us about yourself!
KidWash 2 : PVC Sprinkler Water Toy
Easy-Peasy PVC Water Gun
Heh looks awesome but note on the O-rings.. if they are real rubber, petroleum based products will dissolve rubber.. so no Vaseline with rubber rings unless you want to replace them every 6 months. (Actually they teach that in sex ed). Use a silcone grease instead.
Halloween Magic Mirror
You should also note that if you use certain pins... at least pin 5 (BOARD pin) on RPi3 you can use it to boot up again as well.