Yep mini goal rewards worked great for me. However, be careful with spending too much money on clothes on the way down. When I hit size 8 at around 150lbs in February, I was so excited that I bought a ton of new clothes. Well then I started strength training, and the last few pounds have made a HUGE difference on me clothing-size wise. Those 8's are all too big now and I'm actually mostly in 4's. That's a number I truly never expected to see. But point being, I blew most of my new wardrobe money a few months ago on clothes that I only got to wear for a few months. I really wished I'd waited to get to goal before I bought new clothes.
So if I could do it again, I would have done most of my transition-size clothes shopping at TJ Maxx and Ross, just enough to get by. But things like a new purse, new shoes, new makeup, new jewelry, new perfume, etc will add to the confidence boost and you won't have to worry about them not fitting later on, haha. Or maybe a theater night with the girls, you could splurge on some fancy healthy food, or make yourself and maybe a friend a really fancy low calorie healthy dinner, you could get a healthy cookbook, or buy yourself a few sessions with a personal trainer. There are lots of possibilities