Most of you probably know this already but I missed these features somehow and only stumbled on them recently.

The freighter Manage Fleet interface (on the console opposite the captain) lets you put ships in “cold storage.” They retain their tech but you can’t use them until you pull them out into one of your 12 ship slots.

The same can be done for multitools with the buildable Weapons Rack base element.

You can archive 18 of each. I was excited to discover this as I totally missed the news in whatever update brought it.