Perhaps one of my most interesting dehydrate/rehydrate discoveries is peppers, including green bell peppers. (Sorry @rotuts). When dehydrated, much volume is lost. The rehydrated pepper doesn't rehydrate fully and, even after a bit of cooking, is still quite leathery, so it doesn't disappear like a regular pepper would. Also when using the dried peppers, I have a tendency to throw quite a bit (1/3 to 2/3 cup) into the beans or soup or stew. This results in a very strong bell pepper flavour which I find very tasty!
In a full Instant Pot I might also add 1+ tablespoon of dried poblano pepper.
Yesterday at the farmers' market I bought 3 pounds (1.4 kilo) green bell peppers and a quart (litre) of small colourful bell peppers. This created 3 trays of green bell pepper and 1 tray of colourful bell pepper.
Fresh, the colourful pepper tray had about half the volume of one tray of green bell pepper (which was also cut into twice larger dice). This is the tray after it had dried overnight.