I have a bunch of extra Mirage nanosat speakers that you could make a complete surround system out of (no subwoofer, though). They all worked before storage, and if you're interested I'll retest them and set them up for you to demo.
Mirage speakers were known for "disappearing" into a huge soundstage. These are omnidirectional, which also makes them great for surround in awkward room layouts.
$150 - (5) Nanosat, black aluminum
$80 - (2) Nanosat Prestige, gloss black
$50 - (1) Nanosat Prestige center channel
The difference with the Prestiges are better looks and a more refined tweeter. The regular nanosats have a more lively treble experience (which I kind of enjoy).
Some have mounting brackets. They have threaded holes in the bottom and you can DYI a mount (I'll show you my solution).
I'm also selling a pair of OMD-5s and an OS3 center channel.
You can come here, or we can meet nearby. You can try it and make sure it works. Sale is as-is/where-is. I accept cash, venmo, cashapp, and some others. Thanks for looking!