So back to the drawing board I thought about another shape that went with the idea of volunteering to help in a park and it occurred to me that you might practically use a spade to help with gardening, and I thought what if the I designed a leaflet shaped like a spade.
I started off just doing a sketch and then making a plain paper prototype using 3 pieces of A4 paper. The basic idea I had in my mind was a leaflet in the shape of a spade which folded in half and opened to reveal a folded piece of paper which had the chunks of info on and contact details. I also thought this would work well within an open topped envelop/pocket so you could see the handle of the spade sticking out but not initially the whole spade.
happy that this sort of worked I set about thinking about types of paper, colours textures and making a variety of prototypes until I found one I was happy with.