While I admit I haven't tried this due to costs/available funds I believe it would be a way to make a creative display.
Use different Styrofoam blocks and 1/8" wooden dowels.
You can get the blocks in a number of different sizes and shapes at craft stores, you can create different displays like a step display
like this one and use the wood dowels to stand your figures on it, the 1/8" dowels would fit in the hole in the bottom of there feet and can be put into the Styrofoam.