Sick of having a bunch of half-empty water bottles sitting around? Put them to re-use by printing this flower-shaped watering head. It screws on to the top of standard water bottles to turn any bottle into a watering can. This is perfect for indoor and potted outdoor plants, and it is attractive enough that it becomes part of the decor!
This can be printed on many standard maker machines, but you will want to be careful to make sure the resolution is high (i.e. layer thickness is low) so the threads come out nicely.