If you're always losing your keys, you need a regular place to put them. A bowl on a side table works, but is kinda boring, so why not make your own out of Lego?
This sprinkler head may look like a typical lawn-watering device, but it really isn't: It's actually a key holder that will help you hide your house keys in plain view of all potential trespassers.
Perhaps someday we'll all have USB thumbdrives on our keychains so we can take advantage of this USB keyholder prototype. Until then, we'll have to settle for keyholders with a slot for inserting keys instead of USB drives.