Of course Sunny and (in particular) Charlie will be part of this game, but I also wanted to include the wonderful gifts I received just in time for this year's bingo. So this is what I've come up with:
My marker for called squares is inspired by LA's beautiful Halloween-themed handmade bookmark.
My marker for read squares shows Mystery Cat Charlie with my Halloween socks from OB.
Called and Read Squares:
My marker for called and read squares has Charlie "blacking out" the respective square (without also featuring the net, though, which when trying out various designs I found obscures too much of Charlie's face; the net works much better with the actual squares of the bingo card).
Given his coloring, Charlie will of course be doing the heavy lifting, i.e. will be showing up on almost all of the [called and] read squares of my card, except for ...
Called = Read: Center Square
... the the center (raven) square, where read equals called, and where Mystery Cat Sunny will make his appeareance, Halloween socks in tow, once I've read a book I've decided to assign to that particular square.