The obvious in my mind would be a wand of some kind. Its just such a generally useful type of vibrator, can be pleasurable for any genitals and comes in many sizes and strengths.
Less obvious one would be a cock ring if you are a penis wielding individual. They’re unobtrusive and can give you a further measure of control over your erection/orgasm. Can help is a number of different scenarios. So what about you folks? What is your toy you think everyone should try?
I only did it like 3 times when really horny, I don’t know what happened to it…but it was rough, and it would 100% only work for me.