I’ll add a few things. Take some small scissors to cut threads or hanger straps. Take nail clippers and an emery board in case your nails need fixing. And if you used your own nail polish, bring it in case you need to touch up a spot.
The other day at work, I banged my finger on the refrigerator door, and it was bleeding pretty badly from near the nail bed. I wrapped it with a tissue, but it started bleeding again every time I took off the tissue. I eventually had to rubber band the tissue on my finger and leave it there to get the blood to stop. From this, I think I’m going to make sure I carry some band-aids with me.
While I agree you don’t want to overdo outfits, you may want to consider bringing an extra one or two (maybe one day, one evening) in case something happens last minute, whether it is a rip, or it isn’t fitting that day, or it’s not fitting your mood.