Regarding those window garlands I was talking about yesterday (and I did make another one during the Louisville game last night), I use Command Strips to hang them instead of hammering nails in the wall. I’m a HUGE Commands Strips fan and I have them in all sizes. They’re easy to stick on and remove and leave no marks on the surface.
At Christmas time, I have decorations all over my house, and then afterwards, I just remove the Command Strips and save them again for next year. You do have to buy new strips to continue reusing the hooks, but I buy variety packs online.
I’m not in any way affiliated with Command Strips or 3M