Help! How do I celebrate my first 100 down?

I want to reward myself for my first 100 down. I have no idea what I should do. I originally was going to get a new car radio installed in my SUV or a Tablet, but I am going for those in December :D

I want something epic! Something semi-permanent. What do you guys/gals think. No idea to big or small as I am just looking for ideas

Thanks -NA