These little shelves are designed to be stacked on top of one another, and the drawers fit nicely into them. In the future I'll probably add some guide rails - but for now feel free to have a look!
If you like my designs, feel free to check out my website at meanderinglaser.weebly.com

EDIT: I added stl files so you can 3d print these! The numbers of things you need are

for 1 drawer: (image has 3)
drawer_01 x1
drawer_02 x1
drawer_03 x2
drawer_04 x1

for 1 shelf:
shelf_01 x1 (or x2 if you want a lid on the shelf)
shelf_02 x2
shelf_03 x2