I solved the Kappa problem. Carrot Container replaces it and Kappa is a 71 unlock. Donut because it's hilarious... (Carrot because it's the carrot on a stick to keep people questing!) :
How To Upgrade Escape From Tarkov Edition - Games Finder
XeroFsGiven (@Xero_7z) / Twitter
How to get the Kappa Container in Escape From Tarkov
We've got stash size progression now, would be cool to see a more fleshed out secure container progression next. Here's some suggestions. : r/EscapefromTarkov
EfT Secure Container - Save your in-game goods with this tool