I agree about items in the tool tray, and SparkleGeekGirl's suggestion of stacking is excellent. At least the Windows/Mac versions have a couple more slots in the tray than the iOS/Android versions ...

I'm less concerned about changing outfits and keeping earlier ones. I suspect that's because I'm a guy, though. I don't really worry about the peeps' clothes and have only changed their wardrobe a few times, when there are two wearing the same clothes and I find myself mixing them up.

That's happened a couple of times to me when peeps have the same green clothes as the gardener or maid.