Small containers can be very handy to store odds and ends when travelling, such as small food snacks, medicines, batteries, cables. Humangear’s GoToob is a good size small container with the added benefit of one-hand operation. Squeeze the GoToob’s side and the transparent lid comes off. Easy to operate and functional. BPA-free, PC-free and phthalate-free. Available in two sizes and covered with a lifetime warranty.