suitcase (Wheatley)

Has anyone got an old mobile suitcase with four castors but broken bodywork, that has encountered rough handling please? As long as the castors and adjustable handle still work, I could adapt it to carry my trombone and case about in. I live in OX33 but have no wheels, so if you have such a thing, one of my children would come to collect it from you. NB I have tried using a shopping trolley but the balance is all wrong. Thank you for reaing. Caroline.