What can i do with a large Bottle of CO2 if no-one will take it off my hands? i've been trying to sell it for a while now, had various time wasting interest and thats about it. well, now i've got a deadline, i'm leaving the UK, SO, if no-one will come and get this thing, how can i get rid of it?

Anywhere i can get hold of some handy tubs? various sizes, little big medium etc.. for slings mostly, the must be clear like the ferrero rocher tubs. I've looked around but most tubs are food containers and arent very clear :( There must be a website or something which specialise in handy...