I specifically remember asking my parents to get me latex booty bands like these Fit Simplify Resistance Bands ($9) for Hanukkah freshman year. I worked out with them in my dorm so often that I had to replace them a number of times throughout college, and I also brought them to the gym in the little bag pictured here. They were my favourite fitness accessory (besides my rhinestone gymnastics shorts that I made the mistake of wearing to the gym during my entire first semester).