Good sex positions for guys with smaller size?

I’m seeing this guy, who is pretty amazing and we have started experimenting with each other. He is on the smaller side and I have no problems with that but I have thick thighs and for example being on top it’s a bit difficult unless he is very hard. We have found that him on top with my legs up feels pretty amazing. What are some other good positions we could try that would be doable with a smaller size?