From Monday 14th Jan there's a couple of non-gardening related items you might want to adapt for the garden/lottie:
Protective plastic dustsheet - don't know exactly how strong or thick it is. Two sizes available, both quite decent: 4m x 7.5m or 4m x 5m - could be useful for home-made cloches or mini-polytunnels - or even as replacement or additional covers for those pesky mini-greenhouses! £1.99 per set of 2.
The other one is also a dustsheet, but described as 'made from fleece with polyethylene coating - highly absorbent, with one non-slip side'. I wonder if it could be used in seed trays as a kind of capillary matting? Anyway, it measures 1m x 3m so enough material for a fair few trays. Price £2.99.
What do you reckon? Here's a link:
http://www.lidl.co.uk/uk/home.nsf/pages/c.o.20080114.index.ar2