Nugget659 writes –

These are a nice way to add a little life to your cubicle or office. They are simple metal boxes. I was inspired by another instructable: Credit-Card Flower Box (Fridge Magnet). I really like the magnet version, but there is not much light by my fridge, and I only had enough cards to make two. I wanted to make a cubicle version, so I decided to make some metal ones. These are very cheap to make.

Cubicle Planters, A Garden in Your Cube – Link.