22 getting fisted with a glove 23 getting fisted without a glove 24 getting rimmed. 25 getting rimmed with a dental dam. 27 water sports. I took the most pessimistic ones from the literature. These are estimates for the average person.
Unprotected sex is about a hundred times more dangerous.
The key thing to learn from the probabilities is you may get away with having unsafe sex a few times, and not get infected, but that does not mean you will be safe if you keep doing it. Repetition pretty well guarantees infection. Also consider that I personally was infected with a single encounter of unsafe sex. You might be similarly unlucky. My list concerns only the risk of HIV infection for the given action.