Maxipads and pantilliners, due to their design to absorb blood from a woman's menstrual cycle, make excellent water cooling packs.
Step 1: Parts
1. Maxipads (or Pantiliners for a smaller pack)
3. Plastic zip lock bag
Step 2: Fill the Maxipad With Water
2. Since maxipads are designed to absorb blood, they can hold a good deal of water without leakage
Step 3: Place in Ziplock Bag
2. Place zip lock bag into the freezer.
Step 4: Wait Until Frozen
2. The pad will release only a little water as it melts which will be caught by the Ziplock bag.