1) A year or more of gym membership. I think a place like 24 hr fitness can freeze your membership if you get lazy or seriously injured...for any reason really.
Or a squat rack, but it probably costs more, and you would need barbell, weights, bench to go with it.
So...
2) A bicycle and bike gear (helmet, tubes, pump, co2 cartridges or mini pump, lights, bike clothes).
3) maybe the rack can be bought used off craigslist. But still not enough $$ for weights barbell and bench.