More info on what else I use to make these kits at my blog here: https://losingteeth.org/ttrpg-kits/
The Little Free Library Lady made a small zine about LFLs! Free to print and distribute!
I haven't actually used in a TTRPG kit but think it'd be a great addition.
Maybe include in future horror/sci-fi kit.
Maybe use this?
con Barrow Delver y tablas
I use the free hexcrawl rules for the kit. I have included these in most of the Tunnel Goons, WoDu, and Cairn kits I've made, though now that there's the CAIRN Adventurer's Guide I'll probably include that instead with Cairn.