There are a few others around here, but I like this kind of scoop. The front is raked forward a bit which makes it easy to reach in and scoop with, but still easy to shake and level off to get an accurate quantity.
I was going to make more sizes, maybe I still will. For now, however, my dog needs 1.25 cups, so here it is.
Internal volume is accurate with 1.5%
Easy to print with no supports. I printed it with regular ol' PLA and it was plenty sturdy
The author hasn't provided the model origin yet.