Toss in any lid-less Tupperware, odd scoops and spoons. Or trim 20-oz Coke bottles in half. Now you have a funnel and a cup!I like thin puzzle books. They don't take up room in cars and planes, and you can toss them at your destination.
Flip through your thrift store's book section for a huge savings! These cost 25-cents, with very little writing from a previous owner.