You will be popular in your workplace with this one!

This design contains 3 pieces which are snapped together to create a tray for carrying 4 or 5 cups from drink vending machines. Also provides a small recess for your change.

Why not print it in white and write your orders directly on it?

EDIT (02/04/2016): One piece STL file added by request.

No special print instructions.

The 3-piece design allows for printing on a small bed size.

The design is 10mm thick to give good rigidity and stability to the simple dove-tail joints. The joints are deliberately tight but can be (firmly) pushed together without any need for fettling. Some glue could be added to the joint if desired.

I'm sure there are better joint designs which could allow a thinner design (so quicker to print and using less material). Please feel free to Remix if you spot an improvement.