hi,
i made a little example of how you could achieve this with minimal work 
ok here is the demo
here are the steps in a few screenshots 
ok this will be on your character with the interface which comes later… where you see the DropItems Array, you could sort items for distance for example if they overlap,… depends on your needs
this is the DropItem base class… i made it so you can make different branches but allways have the base as a reference… value would be the points of the item…
and this is a child of the base item… empty for now
the interface for the item calls… (both have the same structure)
this is the DropZone for your DropItem…
and last the widget i used on all, the DropItems and the DropZone
hope this helps you
cheers 