I've made use of something that I found chucked at the side of the road.
Last year the TOB came down the A6 within 200m of my house, for a few days before it yellow signs were on lampposts warning of the road closures which made me think, 'they'd make a nice souvenir.'
Alas the day after they were all gone but a few months ago I walk past the main junction in town which has a piece of wasteland on one corner. Work has now been started on a block of flats which means it's been fenced off, and I spy something leaning against the outside of the fence.
Off I go making a mental note to return in a few days and see if it's still there, and luckily enough it is, it must have been slung over by the builders rather than put in a skip.
So here it is in all it's glory.