have 100$ gift card and time to spend on flash photography

ok so i have a gift card im dying to use which isnt much only 100$ i currently have a very cheap studio lighting equiptment that is continous. Im looking to learn more about flash and also flash studio (strobes). i also already have a 430ex. my question is, should i get another flash? this way instead of using the cheap lights i have, i can use flash on stands, wireless? or should i just go and instead of looking at flashes just go and get some strobes? i know 100$ isnt going to get me much but at least it can be 100$ my total =) i was also looking at the 2 foot flash cord also. but that cant help much if all i can do is use my arm length.

I've gotten $100 gift cards 2 years in a row for Christmas. It's a tough amount to spend, not enough for anything big and I don't really need anything small. I ended up paying for some rental equipment with my gift card.

I'm working on saving towards another flash, I like the versatility of it, I shoot with 2 bodies at races and I have to keep switching my flash from on camera to another.