What electronics were you surprised by that now you bring every time you go camping?

Last weekend the FIL and I took an A Frame with a bell back to semi-dense public camping area (multiple campsites were closer than I expected but I was ready to just not be near a place where cars constantly are running around.) As it’s still quite warm here I brought a Dewalt powered fan and a Coleman rechargeable lantern. Now I don’t think I will go camping in the spring/summer/early fall without them. What surprised you that now you refuse to leave in the truck or at the house and is…

What electronics were you surprised by that now you bring every time you go camping?