HF may have a couple options for you with minor adjustments.
They have an adjustable 15 slot pliers rack, 56399, for $18, but its 12 inches long. Could it be cut down? Maybe, but I haven't done that to mine. The dividers should stay on no problem though because of the slide mounting in the middle. Mine currently holds thin grip items like my snap ring pliers set and could easily have 4 inches lopped off with no problem. If not completely apposed to a wire metal one, another option would be their wire style pliers rack, 70022, for $10. It holds 16 but since its wire it would be easy to cut down and fit where you need it and with the 6 or 7 items you need in it. I've got a much longer version than this HF one that I'd cut to fit a drawer around some other tools and it worked well.
You could always buy some cheapo plastic angle mouldings or aluminum and assemble one that fits exactly what you need on the cheap.
Good luck.
V/R
Bogie