Right now the survival kit is a knapsack (easier to grab in case
of a real emergency). But I'm thinking the rest of the little
stuff -- oil, some tools, paper towels, ropes, chocks. whatever.

I found a number of "under the bed" boxes (Home Depot, Container
Store, Bed Bath & Beyond) about $10, 31 in long, 16 in wide,
6 in high.

I'm now curious as to how sturdy they are. How much can I pile
on top (e.g. luggage) before there's a problem.

Tomorrow morning -- tape measure in hand!