I'll be experimenting with how to add larger format things to the call, yep, thanks for the additional ideas.

I'm using a spreadsheet with name (and link to their request), amount donated and people referred. If I get more practise, I might add linkbacks, too, but I'm leaving that out for now.
I'm also counting referrals as an extra tip since that is easier than coming up and keeping track of a separate kind of perk.

I'm trying a few things for the "not wanting to get overwhelmed" bit: staggering plugs over a few days (so I can start on the first requests before the last come in, rather than having all of them up front), or this time not promising art by a date.

Thanks a lot for your suggestions and encouragement!