Three words come to mind when I think of under bed storage:
Don't do it!
We have never stored anything under our beds. For about 12 years we had a platform bed so it wasn't possible to store anything under the bed. We purchased a sleigh bed about three years ago and the only thing under there is dust and the occasional tennis ball (belonging to the dog). I think that using the space under a bed for storage is a slippery slope towards Hoarderville.
If you are still determined to use that space for storage you can find a plethora of under bed containers. From the groovy space bag, to Rubbermaid under bed plastic bins, to custom wood drawers to cute baskets, there is something for everyone.
In small spaces storing out of season clothing or linens under the bed may be the only or best option. Make sure you pick the size and style of container that works best for your bed size and storage needs.
I am taking part in The Nester's 31 Days Challenge, along with over 1000 others. If you have missed any of my posts you can find them here.