Thanks to all for the suggestions.
@ David N.: That Harrison tent looks great, but $XXX won't fly in the current budget.
@ Newton Swings: You're taunting me, aren't you, suggesting the cardboard box inside my changing bag? I have enough trouble finding the bottle opener, the 35mm cassettes and the steel reels with my current set-up. But if I had a bigger bag ... maybe that's the route, indeed.
@ HTF: If I start dragging film gear under the covers, I can't predict an improvement in marital relations.
@ John&Tessa: You're just jacking w/me, I can tell. ... Right? Really? Say you are. Or you have an overly high opinion of my carpentry.
@ Stephen in Columbia: I'd be glad to see/hear about this item.