Cheap Workshop Stool on Castors

I was given an old vacuum cleaner for my workshop.  Very soon I understood why!  The motor failed.  I was left with a stainless steel bin on wheels.  Needing a stool for my modelling workbench removed the unwanted bits.  I then cut two discs of 10mm plywood, one the diameter of the outside of the top and one the diameter of the inside.  I stuck the two together with vinyl wood-glue and presto!  I may get round to upholstering it one day but it does a great job at the moment and provides an extra bit of storage.