Lemonade backpack

Developing the lemonade backpack is currently the most complicated task under the angel care project. The design has the following requirements:

1. Carry and dispense water
   1. Prevent liquid sloshing, a simple jerrycan does not achieve this
2. Offer sunscreen
3. (Proportional salts)
4. Cool water with ice
5. Offer lemonade as an option
6. small features
   1. Music
   2. water Gun
   3. Bell
   4. Ice pops
   5. fruit and snacks

i see no contact info so i will post it here. there are cooling and heating backpacks for drinks you might have a look at. example https://www.backpack-drink-dispenser.com/about-rocketpacks.html