I'd quite like to be able to 'lock' slots in my inventory to stop me being able to accidentally donate or give away certain things. I live in fear of donating my Yeti by mistake, and it's quite annoying to accidentally donate things you didn't mean to. For example, last test I dumped a crystamalizer with a load of wear on it by mistake, and got fewer favour points as a result. A little padlock icon or 'lock' command on individual items would be dead handy, but I can understand not wanting to clutter menus up with that. Perhaps a special type of bag that you can lock the entirety of to keep extra-fancy things safe inside? Or a padlock you can buy for use on a single item or stack in your inventory?