You'd need to buy a 1200 accelerator, which is expensive but not as expensive as for a 3000 if youre not talking 060 or PPC. PCMCIA ethernet for 1200s is absurdly cheap. Laptop IDE drives are cheap and work in 1200s so you can get a few gigs in there.
To keep in mind: 3000 accelerators and other cards work in 4000s, which have the AGA chipset. So that's another upgrade path.
