If you are brave enough, put a collet chuck in your lathe, mount an end mill in it, and clamp an alloy block in your tool post. Start your lathe up. You can do simple milling operations now.
Also look at making a spider for the back of your lathe. The project covers identifying your current thread (if your lathe had one, which 90% do), cutting a thread to suit without having the ability keep checking your fit, like you would with a brake. This is the old "measure twice, cut once" thing.
Lastly, make a nice quality radius cutter. There's a bunch of different ways to make it, get some heavy wall pipe, like the picture (not mine) shows.
Lastly is a negative radius cutter.
With a little creativity, you could make some wavy looking rod, part it off, then machine some flats on it like a hex bar, and turn it into crazy looking bolt knobs or muzzle brakes.
This should be more than enough projects to see out the year. If you need or want any advice or tech pointers, help, technique to machine something, just ask (drop me a PM).