i probably wouldn't bother finding clothes. If i found something i wanted anyways- maybe i'd buy it and put more money in. If i didn't want to do that- i'd buy perfume or makeup. Or diptyque candles if they have them. Nice beaty products feel like a better splurge than overpaying for $100 jersey basics that you can find at H & M for $20 (unless you wanted it anyways).
If I had to spend only 100, I'd get Giorgio Armani's Matte Silk Foundation and the foundation powder to go along with it. I think that brings the tally to $108.
BUT I wore it on my graduation day and it makes my skin look PERFECT.