Leigh Rigozzi was the first to send back a guest comic, back when I was feeling super-anxious about this being anywhere near a good idea, and obviously made me chill right back out again. You should go check out Leigh's work - he does some super nice comics, and a pretty sensational mummy
Mumblier.com — short form comics, stories from Andrew Fulton. There's more about it here
You can follow Andrew on Twitter or Instagram, or – more sensibly – there is a twitter for just these comics.
I guess this one is pretty old, hope it holds up.