There was a similar question posted on the class B forum. One thing which I've found immensely useful are well sealing plastic tubs, as well as glass/metal ones for foodstuffs. For bottles of soap and caustic stuff, I put those in a Ziploc bag first. With everything in tubs, it helps with space usage (especially when sticking), minimizes trouble if a door pops open and stuff falls out, and contains spills, so an "oops" doesn't turn into a messy cleanup. The glass/metal containers are mainly for rodent resistance.