What is the one thing you yet lack which will complete your quest for domestic bliss? A cylindrical clip to keep your fitted sheet cliped to your mattress. I saw these at a grocery store for $5 for 4. Figured I could design and print them for less than that.

And before you suggest it, yes this really should be a parametric all purpose cylindrical clamp. Then you could use it for clipping cardboard together to make a cheap cardboard planetarium. Feel free. :)

My blog if you are interested.

1. Print some out

2. Clip them around your sheet and that large bulky seam at the bottom of your mattress

3. Enjoy your extra time as you now no longer have to pull the fitted sheet back down every night. And possibly gain a bit of home cred for solving a nagging problem using your 3D printer.