Dino's Decorations adds a ton of clutter arrangements for your various settlements. If you like decorating, this is a mod you'll want.
This mod adds some neat looking static items for your settlements including kitchenware and lab tools. Once you add them to a surface, your character/companion won't be able to knock them around.
Once you get the hang of it, you can make it look like the settlers in your settlement are actually living there while you're out fighting the good fight.