I bought one of these a couple of years ago for our Golf: they make terrific boot liners. Now back on sale at Lidl and I am off to buy another couple!
http://www.lidl.co.uk/cps/rde/xchg/lidl_uk/hs.xsl/index_37529.ht
http://www.lidl.co.uk/cps/rde/xchg/lidl_uk/hs.xsl/index_37529.ht