You could put a low-profile swivel between the seat and base.

https://www.amazon.com/dp/B00BVV5WSM/ref=cm_sw_r_cp_awdb_btf_t1_1DFrFbMQPKA2Z

But depending on your particular situation, it might not be so great. You've got to factor in interference from the steering wheel and anything else in the area. Like, sure, you've got another seat in your living space that almost rotates far enough to be comfortable, but is it really worth constantly elbowing the horn?