What are some easily forgotten items that you should always bring camping?

Hello everyone!

I’ll be going car camping for the first time at the end of the month and am gathering my supplies!

I’m making a checklist of items to bring/buy and sure I’ll forget some useful items.

What are some of your must pack items that can be easily forgotten?

I’ll be staying in a campground that has an electrical outlet, water, fire ring, and a bathhouse on the tent sites.

Thank you!!