i have a couple of upright storage racks from Screwfix. They're 2m high, about 1M wide (i think) and 50cm deep. Great for storing my luggage when its not in use, plus some camping gear, cycling stuff etc. Only about £20 too and have a decent weight limit.
I have a rollable tool cart which goes under my workbench (using what would be dead space otherwise).
Link to rack