AsTeRICS Grid open source symbol search
Last week I stumbled upon a great resource for open source AAC symbols: https://www.opensymbols.org/
It collects open source symbols dedicated to AAC from various sources and offers a search interface for it. Since it also offers an open API, this project is ideal for make symbol selection easier in AsTeRICS Grid.
After some development effort you can see result of the AsTeRICS Grid integration on https://grid.asterics.eu/ ("edit grid -> right click on element -> edit") and in the animation below.