I would start with simple things, not even toys, but accessories like blindfold tapes or lubes. You can play around with lubes: they come in warming, cooling, and different flavors, and they can make a big difference in sex, even though you just seem to add lube. Your partner will see what pleases you and perhaps suggest trying something new himself. You can read useful information here https://blog.uberhorny.com/what-men-can-do-to-make-their-orgasms-even-better/. In choosing a sex toy for a couple, in addition to price, I would pay attention to how versatile it is.