Please try signing up for a news subscription for yourself to see what the process is like (https://tatchup.com/).  It might give you some ideas as to what we'd like to transmit with the logo.  
Looking for something simple where the favicon could be recognizable with time.  What's currently up at https://tatchup.com/ is decent but we're looking for something that reflects the mission and value statement better.
A favicon that nicely incorporates either a ' @' or a 't@' might be desirable but don't let that handcuff you if you have other ideas. Something like what's attached (working with positive and negative space could be a good idea to implement.

Tatchup