I think there should be a whitelist of things keffa-o can cary while on the jeep. containers i understand why balance wise but i think she should be able to hold things like the radio while driving
(edit) Also, unsure if this is already the plan, but the different trash bins with lids should have storage capacity bonuses to the scrap type their texture represents. IE the grey bins for metal cuts the volume of metal scrap inserted into it by half or 2/3rds or something.
as it stands right now storing large amounts of scrap (in ways that doesnt obliterate the tickrate) is rather annoying