Off*beat reprinting of 1+2 Extras??

So this month I will be working on new covers for books 1+2 of Off*beat.  They will be reprinted with my new publishing company and match the layout, logo ect of the eventual book 3.  I would like to add some extra content, and my publishers have agreed to possibly adding a limited copy insert as well.

I'd like to know what the patient, patient, (bless your souls ;_ patient readers of Off*beat would be interested in seeing as added content and a possible limited insert.

I was thinking for added content perhaps more little funny strips, kind of omake? style. Or sharing some of my photography and talking a bit more of actual locations in NYC that heavily inspired the setting.

For limited inserts, I was thinking of perhaps a post card, bookmark, or stickers.

If you have any thoughts on this, please let me know.  Thanks!

And I will have more updates in the months to come