This colorful pen case organizer is a must-have for anyone who is looking to keep small accessories in order. 100 pens can fit– you guessed it– 100 pens inside its roomy interior. Put 26 within the pen loops and 74 within the base, or fill it up with art supplies, or makeup. We’ve also seen it used as a travel cosmetic case that can easily be thrown into a backpack, tote, or carry-on luggage.