Hello fellow hobby enthusiasts!

My birthday was earlier this month, and I just got a $50 gift card to Hobby Lobby from my GF's parents. Now, I'm not sure what to do with it because I have all the standard basing materials, tools, modelling putty, etc. I even have a little casting kit I got there earlier this year.

So my question is: What's something coooool/useful I could drop $50 US on at Hobby Lobby tonight? It can be in the above categories, but definitely something outside of the box on the standard tools (knives, clippers, files, modelling tools), and materials (sand, static grass, flock, etc).