A portable air pump for your car. They come in handy. I always keep one in my car and it’s helped when I had a leak in my tire, someone else had a leak, we went camping and made inflating an air mattress more easily, inflatable rafts, etc.
A bottle of baby oil. I use it to moisturize my skin, makes my nails stronger for guitar playing, I put it into my hair to make it better, and
I jack off with it
A pocket knife.
A decent tongue scraper