Hi all,
I spent the day organizing the basement. Our baby arrived a month early, and just now (2 months later) did I find time to organize things. On the upside, the Intellivision Collection is being curated again. And the gaming station is being finished (5 year old wants to play video games...). But, with the discussion of storing overlays, here is what I use for my homebrew overlays. I like the small size, that its easy to store and get out, and when someone flips through it they can take the time to look at the artwork on each overlay. This is the Ultra Pro 2 pocket that I posted earlier and has 80 pockets total.
With the announcement of boxes (dont mean to open wounds here) for the Flashback Overlays, I ordered the 4-pocket version of this, and has 160 pockets total. Accounting for games with multiple overlays, I should be good.