I spent my lunchtime in Slough Currys/PC World car park chatting with a fellow autoshiter, and swapping an old laptop for a nexus 7 with a smashed screen (He was going to bin the nexus, but I need a USB board and speaker board for mine). But he also gave me some other bits (he works for O2 programming in store demo hardware, so gets lots of random bits apparently)
Apparently these are used by Dyson to lob dirt down onto carpet for in store demonstrations and he thought of me and nabbed one!
Seems to be filled with Flour and oats
So that is pretty awesome, and another thing to put in my box of merchandise. He also gave me a lunchbag he got from when Beko were flogging fridges in a comet store a while ago