I use it to this day to run the "Best Books" accounting software (cut down MYOB) I bought in 1991 for the single-digit number of invoices I issue in a year. That's M68k software. Accounting doesn't change. The only thing I've had to do is change the GST rate from 12.5% to 15% in 2010.

I use print to PostScript for invoices and reports then copy them to the host machine (which these days can be anything) and PDF or print them.

In theory Basilisk II would do the job, but SheepShaver runs PowerPC software too, and a modern CPU emulating PowerPC emulating 68k is just fine.

I should try "II in a Mac" (from 1985) inside that.