Mitch’s Wargaming site has a neat design for magnetic movement trays. I like the irregular shapes.
movement tray
Making Group Movement Bases
Here’s a illustration of how to make some very nice looking group movement bases.
Making Plasticard Movement Trays
The Tabletop Terrain site has a little, but useful article on making movement trays for your figures. This is particularly useful for games like Warhammer Ancients and the new Lord of the Rings big battle game, where large numbers of individual figures are maneuvered about.
Making Movement Trays
Grimsby Wargaming has a nice illustrated post on making movement trays for your ancients games.
Tray Fillers
The Wargames Table blog has a good idea for filling in the blank spots on a movement tray.