The water that comes out of the tub faucet. Lay down and scooch up as far as possible. Let the water run on your clit…that will do the trick. Also, if you have a removeable shower head you can use that to. Change the speed of the water flow to give you different effects. The clit is the best way to achieve an orgasm.
Spend $10 and get a multi-speed vibrator. The items around the house are probably not hygienic and not built for sex. 1 trip to the emergency room is going to cost a lot more than you’re saving by not buying a sex toy.
Did you know that the electric toothbrush vibrates at the exact speed most likely to induce an orgasm? If you aren’t quite comfortable with this idea (plus for a more hygenic option) you can get a sleeve that actually slips over the toothbrush.