I have several small (1/2 and 1/3 U) pieces of rack gear (LXP1, LXP5, TubePre, AudioBuddy, etc..). I have some universal rack trays thad hold the gear ok, but they are so deep, that when I have 3 or 4 U of gear stacked in my rack, it's damn near impossible to get my hands in there when I want to...