Would like to see a plugin that would let you create chests that generate X item every X time with a maximum amount that can be generated. This could let you leave chests for people to find and get items from.
If it's not done until I'm back from holiday, I'll have a look at that, shouldn't be that hard. But in my holiday I'll hardly have time for that, sorry.
I have an inactive plugin called EggTimer in my sig (should still work) that you may be able to make do what you want.