I have an old coal bunker near my back door, and rather than knock it down, I thought I'd use it instead. Half filled with rubble, then a layer of material, then soil, it makes a lovely raised bed.
I've since build a wooden frame glazed with polycarbonate sheets to form a large cold-frame.
I finally knocked it down. Some of the bricks were used as a sub-base under block paving by my shed.
The gap no has a wooden bench, where I do my pricking out etc. It also has shelves which currently hold many strawberry plants in pots.