A box with 7 compartments, one per day, for storing pills, with print-in-place hinges. Each lid clicks in place and offers some resistance.
I designed this one from scratch because with all the other ones I couldn't get the hinges to work well enough (+ CAD training).  

Do yourself a favour and don't use silk-pla like I did.
Printed at 0.20mm layer height I think - with 0% or low% infill