i was gonna mention peg board (like how v8wannabe2 has), but since this sounds like it will be portable, i think that maybe a recessed section (like a tub or something) would be a good place to put your tools. i'm having a hard time explaining what i'm talking about, but something like one of those recessed heating trays that they have in large kitchens; almost like a metal sink. let me know if i am not making any sense.. lol