WalMart has the Stanley Adventure 18-Ounce Food Storage Container for $29.99. Pick it up at your local store for free, though, and get an additional $18.05 off, making this only $11.94!
This is perfect for camping, hiking, tailgating, and more! This BPA-free jar is made from 18/8 stainless steel and is designed not to rust, and it keeps foods hot or cold for 12 hours! It comes complete with a full-sized spork for eating outdoors, and the storage compartment in the stopper keeps dry goods stored on hikes or at camp. The insulated lid can also be used as a bowl. It is leak-proof so you can easily carry it in a bag or backpack without being concerned about spilling.