Man, seriously, just yahoo or google "Military Patches".
That said, you're still in the program. Are you just looking to collect, or to wear? Wearing patches you had nothing to do with is lame.
Now, if you find an obscure non-military patch that you can wear and get away with, by all means do so. I see you're in VT-31. Back in the day with the "Wise-Owls" (TERRIBLE mascot) I had a nice green and black 4 leaf clover patch from Lucky Bearings (skateboards). Turn it upside-down, and the "L" looked like a "7". Any IPs who questioned me got my standard "oh it was my API class patch". I still have it on my green NOMEX "winnebago".
And if you're going P-3s, you will get more gaddamn patches that you will know what to do with. I use 'em as coasters now. If you go West Coast, you'll get to go to Okinawa, Kadena Air Base, and will know Tiger's Patch Shop, out the back gate very very well. (what a cool place)