And some of them, like thissemi-automatic hammerand thismotorcycle cover, are actually useful for everyday tasks.
Here are our favorites.
Themanual coin sortershakes each denomination of coin down to a different level.
Themagnetic window washerwipes down both sides of a window at once.
Thewind-up tube squeezergets all the goo out of a paint tube.
An adult can help a little kid cut paper withdouble-handled training scissors.
Were not supposed to like kitchen monotaskers at Lifehacker, but themini rice ball makerlooks fun.
Tools for professionals
Theautomatic honey dispenseris like steampunk for wood.
Thesecalipers and wedgeslevel out floor tiles.
Thebowling alley lane polisheris like an efficient Roomba.
Some tools use surprisingly basic technology to accomplish a task.
Thisanalog tachometermeasures the RPM of a motor using its vibrations.
Theartificial animal womblooks freaky; its a fluid-filled incubator for premature lambs.
Silly tools
Theautomatic paper plane gunfolds and launches its own paper planes.
Someone needs to install ten of these onto a golf cart converted into an aircraft carrier.
Thespaghetti straightenerseems designed forMarcel Duchamp.
Thehomemade nail pulleris the most work anyone has ever put into building the back end of a hammer.
Homemade tools
Theping-pong ball collectorcleans up a messy game room.
Thisfour-person tree log benderwas clearly built in the workshop.
It looks so dangerous!
Thehomemade humane mouse trapdrops mice into a bucket.
Its a bridge…for live salmon.
If you like that subreddit, tryr/redneckengineering,r/mechanical_gifs, andr/EngineeringPorn.
