Camping/garden/ festival cart (Stratton on the Fosse)

Due to having had serious abdominal surgery I can no longer haul heavy camping gear around and all the beach stuff (now alone with small child in tow). Does anyone have a big-ish four wheeled folding camping/garden/festival cart they no longer use please? It would make a huge difference to our holiday this year. Condition not important as long as it rolls along and folds up. Thank you!