Sorry for asking, but what do you need money for? For tack or vet or something else horse-related? Sounds like your horse is in your place and cared for. I mean, yes we all need money
but if it's not something absolutely needed then you can just wait a little till you get older. It's tough to find those little paid jobs if you can't go out. Well, if you can do something nice people would like (like browbands or drawings) you can sell it on-line (eBay
, craiglists, or even forums).