If you don't want to spend the money of battleform trays you can make them yourself. I've made a number of them for my armies and then used gym bags to carry them. Your local fabric shop carries foam in various thickness, you will need a block of cushion foam 1" - 4" thick, depending on models, and then a sheet of 1/2" thick foam. Cut the holes you need for your mini's, then spray the top (or bottom) with some fabric spray glue, and lay the 1/2" sheet on top, trim and let set. After 8-10 hours or so, the glue is set, and now you have your own hand made figure trays.