Do you know of other fundraising things?
I did a google search for fund raising online and got youcaring.com and crowdrise.com as well as gonfundme.com. You can do all 3 to help fund raise faster.
Also if you can make something that others may want and would pay for setup an Etsy shop. The Etsy shop I bought my mobility harness cape and the leash wrap I put on his chest strap of his vest is from a service dog handler who sells them to help pay for her service dog needs. She can sew and makes quality products. I'm about to buy a patch from her that says "Don't you f*cking dare touch" without the astricks. Will go on his forever vest replacing the nicer white patch that says "service dog no touch no talk no eye contact" as no one ever reads it. Our mobility harness cape is amazing and says (in huge lettering down his back) "DON'T YOU DARE TOUCH <Stop Sign> Interfering with a service dog is a felony". It works.
Anyway, if you can make anything people want I have heard very good things about Etsy. One of my sisters has an Etsy shop (and business cards). She makes jewlery and then I was thinking aboug making pull tabs. They are placed on doors, water bottles, bags, keys, just anything and they are made out of paracord and make it possible for your dog to bite onto it to open a door, get a bottle of water, get a bag of meds, pick up your keys. Etc. They are so important that most that have a mobility service dog carries a few with them at all times and even has one or two in their hospital bag but not all know how to make them so if you go on Etsy and search for paracord pull tap you will find a ton. And really most of the things made from paracord such as hands free leashes, dog collars, a pull strap (which goes on the vest/harness of the dog), keychains, and many other things. Most learn how to make their own stuff such as I did but there are those that still buy them.
But can you make something, anything, that others may want? If so try to sell it on Etsy.