Freecycle and similar websites

In today came a 5.4m x 2.5m swimming pool cover! Its made from a heavy duty bubblewrap and is meant to keep the heat in your swimming pool and stop water evaporating.
Now we all know that I don't have a swimming pool but there must be an alternative use for this. At the moment I'm thinking of insulating a GH, covering a frame to make a polytunnel or laying it on the ground in spring to warm the soil before planting. 

Alternative suggestions welcomed.
I also went to the £5x 2 Pantry. Lots of veg - carrots, parsnips, sugarsnap peas, kale, spinach, avocado, mushrooms, blueberries, bread, custard doughnuts, mince pies, crisps, canned drinks, sweetcorn fritters, mixed bean meal, 5 litres of milk, sausage & mash, steak pie, cheese and onion pasty, tins of baked beans and of peaches, coleslaw, potato salad, hummus, a huge cake in the shape of a dog's head (£15) and two fancy toilet rolls!!

I took some lovage plants to one of the Pantry ladies for her allotment.