When I was assembling a few of my dev boards (my Atmega328P and 1284P boards) I thought it would be nice if they sat nicely on surfaces and also not have to worry about solder joints on the bottom side scrapping the surface.  I then came up with a simple and practical idea: why not revisit the idea of using hot glue?

I've done the make feet with hot glue method in the past, but it usually came out quite ugly.  My first attempts were putting a few blobs of hot glue on the backside then pressing it against some wax paper.  When it came time to take it off of the wax paper, the hot glue feet would take a bit of the wax paper with it.

This time I tried using a different material: non-stick aluminum foil.  The results were much better. When it came to take the board off of the foil, no aluminum came with it.

My current method:

Materials:

some cheap hot glue gun and some glue sticks

non-stick aluminum foil

the boards you want to put some feet on

Technique: 

Pub a few blobs of hot glue on the back of the board and try to keep the blobs about the same size.

To help avoid dealing with the "cobweb" effect of hot glue it helps to make a circular motion to break the thin strand after you make a blob.

Gently press the board against the foil and then allow it to cool.

After it cools, carefully pull the foil off.

Below are two boards that I did.  The 1284P board came out a bit nicer (I did rush the 328P board a bit and it shows although it doesn't look half-bad.)