An Ancient 386

I bought an old Zenith Data System's brand 386 PC (it's hueg like xbox) at Goodwill for $5.00.  Here are the specs.  It does work, save for the CMOS battery which was dead.

 - Intel 386 CPU (don't know the MHz, probably 25Mhz)
 - 640K RAM (not 1MB, 640K)
 - You should see this big ol' MFM or RLL pre-IDE drive that's in it (some off brand), it's 2 5.25 drive bays tall and heavy, it's a 74MB drive that works perfectly except for one bad sector.
 - 5.25 inch floppy
 - 3.5 inch floppy
 - ISA bus
 - Some weird ISA VGA card
 
I do have this that I can put in it but it isn't in there now.

 - ISA Soundblaster card (would give me an IDE interface and let me install a CD-ROM)
 - 10Mbit ISA network card
 - Logitech 28.8 ISA modem

It belonged to a church.  When I first booted it, I found all sorts of information on some church, including member's addresses and phone numbers.   Always wipe your HDs before you sell them!!! But I reformatted and have MS-DOS 6.22 on there now.

So what should I do with it?

Try compiling a small Linux kernel for it, it just might work :) Otherwise, I heard that Minix works with just 640K of RAM.