I've got an old NEC PBX from somewhere around 1999. It's digital but also supports analogue extensions. I've also got 8 phones that go with it, some punchdown blocks, and a 4-line NVM-2e voicemail system.
All of this can be yours for the cost of shipping plus a small tip for packaging it up and mailing it.
If there's interest I'll post some pics. The phones are definitely well used so you're going to want to clean them well before use.