This is such a smart idea! These travel USB port charges allow for 2 devices to be hooked up at once. Just toss one into your suitcase so that you always have it with you so you can charge your devices on the go.
These are priced at $3.99 for a 2 pack + $2.99 shipping for a grand total of $6.98. If you don’t need 2 for yourself, you could just split one your purchase with a friend and you can each get one for around $3.50!