For my own tools i use a small gatemouth bag with several custom rolls for wrenches and screwdrivers. What i like about the rolls is that when the job is over it is easy to keep tools organized and also to make sure that you have not left anything behind.

Tool rolls are fairly easy to make if you have any kind of access to a sewing machine. My own tool rolls are made from scraps from an upholstery shop. Do get a few comments on the "pretty" colors when i display my wrenches.