Is there any prefab brush that works well in unity 2d?

Hi, this is the first time I've asked questions on this forums but you guys have helped me a ton with other problems you answered here.

Anyways, my designer made a ton of grass prefabs and I put them in the scene piece by piece (ctrl+d) and it ended up looking pretty good. The problem that I am having is that it would take way too long to design all my 2D levels this way as the maps are pretty large. I found out about prefab brushes that work very well for 3D, but doesn't work very well when trying to paint 2d sprites.

tl'dr Does anyone know a good asset or technique to brush a lot of objects onto a 2d scene?

Thank you very much.