“Upload a profile picture” is the question you often face when creating a new messaging group for an upcoming event, a school parent group, etc. Most people go for a relevant picture, for example the class group photo of last year’s end of school year party.
But avatars are tiny and often have a circle shape. What jumps out most to the user is the dominant color of the image. So the best solution for avatars for these temporary messaging groups is a big bright colorful square (will be come a circle after uploading) with a big bold letter or number. “52” on green for the birthday party, 2 on purple for the 2nd grade parent group. Easy and effective.
(Pro-tip: use SlideMagic to create your avatar…)