Bags for Clubs

What types of bags do you bring to the clubs? The one I am planning on going to is a house club. It is BYOB, there are pools, they say people change into something more lingerie like after a certain point....i am thinking I will want comfy clothes to drive home. Based on other posts, I have seen that people carry a small bag in the club with lube, condoms, etc.

What kinds of bags is everyone bringing? Am I bringing a small cooler? How big? If anyone has links to the bags they are carrying around the club please drop them.

I am fully aware I am overthinking it...this stuff and clothes to wear is making me more nervous than the club experience itself.