There is a small cooler on amazon which runs on ac/dc/& usb power! Grab either one of those cool emergency road kit packages which include enough power to jump your engine and offer usb charging too or the more inexpensive ANKER POWERPACK with maybe 20000 mAh which should run this cooler for more than a day without recharging it. Total expense for the 6pack size cooler and power source, under $80. I would suggest you make this your solution for keeping your diy supplies at a comfortable temperature and also, out of sunlight. Cooluli Mini Fridge Electric Cooler and Warmer (4 Liter / 6 Can): AC/DC Portable Thermoelectric System w/ Exclusive On the Go USB Power Bank Option (White) 500 ML of 12mg nic in VG, 50/50 0r PG, is 9.99 at Nic River and that size should fit in this... or order 250ml of 12 mg nic in VG for 5.49 and that is smaller than a can of soda (355ml = 12oz). Figure all that premixed vg needs is about 25-50 ml of flavorings = near 6 60ml bottles of ejuiceAND YOU STILL HAVE ROOM FOR 5 BUDWISERS.