from the capital dude, there are a lot of things that you can do.
I think agriculture is the best Idea so far considering if you have enough space (about 200sq...but I think 100 ok na...)
the downside is ang ROI slow...but I assure you its very steady...
you can have a variety of animals..from pigs to chickens to goats...even if carabaos will do...ducks are my favorite so far....
but its your own choice dude...indulge in a business that you really enjoy...or if you are creative enough..make your existing hobby a business....