Ability to saved created assets

I'd like the ability to have a personal asset library. Persistent assets that I've created with the abstracts. So…we're starting to get a nice library of blood splatters for instance. If I grab some blood splatter and apply it to an abstract for a map, I've essentially created an asset that I can copy but just for that map. I wonder if there's a way to save that so I can use that splatter in other maps. Or…if I were to extend this idea…simply post that asset for others to use.