Hullo :'D
Well, er, most of it you can just find at thrift stores, I suppose. The wristband, I don't know where to buy studs for, so you could probably pick one up from Hottopic or something that looks similar *_*;
I already have the pendant, and I'm halfway done with the hat. I can bring those to the meetup, no charge. Dana has a chain for the pendant I think, but if you can find a cheap, light chain for the necklace, that could work. Easy to find one right now with all the costume stores~
For the shoes, it'd be easiest to make them with a pair of slip-ons, craft foam, and twill or canvas. When I did mine, there was absolutely no sewing involved, (lul hotglue ftw!) so you could tackle it yourself if you want~ xD
Or you could have her give me the shoes somehow, and 5 bucks for supplies/labor/the chain thing on Beat's pants.