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!) :
The Collector Tarkov Quest - Find All Streamer Items - Games Finder
Kappa vs Gamma - Bug or intended Kappa buff? : r/EscapefromTarkov
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
Escape from Tarkov Collector Quest Boost - Buy EFT Quest Carry Service | Overgear.com
How To Upgrade Escape From Tarkov Edition - Games Finder
5 TIPS FOR SECURE CONTAINERS (ALPHA/GAMMA/KAPPA) | Escape From Tarkov Beginners Guide - YouTube
Kappa Secure Container (How to Get?) - Off-topic - Escape from Tarkov Forum
Secure container Epsilon - The Official Escape from Tarkov Wiki
Secure container Kappa - The Official Escape from Tarkov Wiki