Thank you for this helpful mod! For high value items I do not want to create masses of items. Therefore its very handy to have those small chests without the need for limiting slots in bigger chests. I also really like that there is a visual difference to the standard chests (by having this lock icon on your small chest versions). I was initially using the similiar mod https://mods.factorio.com/mod/osha_mini_containers but that mod does not have visual differentiation and does not have wood/iron chests. Thus very cool that you have all that stuff :-) I also like that your mod is compatible with https://mods.factorio.com/mod/FilterChests I checked that.
One little hint: If Angels logistics mod is installed, then it would be cool when your chests would be where all the other chests are: In the Angels Logistic inventory group https://mods.factorio.com/mod/angelslogistics
Thanks for the kind words 😊 I pushed a little update that should better reflect changes other mods make to sorting. I wasn't able to check with Angels Logistics specifically as I can't easily bring it in to the game with it being deprecated.