Exchange -

: A compact, lightweight piece that is priceless for avoiding plastic bag charges, especially in Europe.

: A highly functional piece that can be used for various small tasks. Strategic "Pieces" in Chess exchange

: A critical piece for ensuring you can charge your electronics in different countries. : A compact, lightweight piece that is priceless

: A lightweight piece that dries quickly and takes up minimal space in a backpack. : A compact

For a gift exchange (like White Elephant or a "Favorite Things" party), "useful" pieces often fall into practical or consumable categories: