Ladies any masturbation tips/techniques???

So I (F 18) have recently getting bored of normal masturbation (just clit touching) and I was wondering if anyone had any tips on different things to do to add sensation or make climax more intense. I don’t want to get any sex toys as I currently live with my parents so I’ve had to get a little creative. I’ve used the shower head on my clit and that was INTENSE but has anyone got any other ideas on how to get off when you’re on your own?