I vaguely remember hearing something about tapping on the back of your head can greatly reduce tinnitus. I think there are plenty of instructional videos on youtube and it's worth a shot to try.
I've tried this in the past and, for me, it never helped for more than a few minutes. But it DID work. It's amazing how interconnected various systems in our bodies can be and how little we truly understand.
It helps some but only for tens of seconds to a minute. Just enough for a tech preview or nostalgia trip (depending on your level of optimism or acceptance), not a solution.