Love the idea of the Teddy Bears picnic, and the charge of £1 sound very good ...you could donate any profit to charity after providing cakes or sandwiches , tea and cold drinks ...lots of games for the little ones ....a little paddling pool with plastic ducks to catch (not too deep and supervised !) your local Mumsnet might have some input ......and ...was going to suggest a teddy bear prize for the most loved Teddy, but that might upset the losers ......or take him on a visit to a care home for dementia patients near you .......it might make the residents happy to bring back childhood memories of their loved Teddies ........
PS ....when I was about 25, I said to my dad how I would have loved a Teddy as a child .......ha ha next Christmas I was rewarded with a 5' teddy like yours .................he sat on a chair in the bedroom and moved with me everywhere I went, then my own daughter adopted him .............that was 40 years ago ............no idea where the daughter or the teddy are now but I do have a photo !! 