Since you say you like to tinker a bit, maybe what you really should think of is there anyone I know who would use / like / need this machine. Either sell or gift it to that person. That way you are still connected to that machine and yet it isn't taking up space in your home.
I am a spinner and I was really into collecting drop spindles for a while. But eventually I realized that a lot of those I had were really just for looks and I really only liked to use 4 or 5 of them. So over time I sold some on eBay and gifted some to friends who I taught to spin. Some of these folks didn't have the ability to purchase one of these nice spindles and it made a nice gift, and for my fellow spinners who were still caught up in collecting, they loved adding something new to the collection.