Useful suggestions: -

Welly throwing competition. Could it be combined with the teddy-bear hanging?

Market stalls and bootfair?

I know a bloke with a rodeo bull and he also has a military regalia and clothing stall business...

More securely tied down large gazebos with dry seats and hooks to hang clothes and bags on, anywhere dancers and musicians are likely to have to stand about in the rain...

Food in the little Gem

Pancake stall (sweet and savoury) on the rec and/or in the middle of town.

Brass band organised by Mr Heather?

Exemption dog/cat/bird show

Gardening competition (vegetables or flowers)

Best kept garden nominations...

Tug of war competition with other local villages.

Mend the expurgated facilities in the community centre...

Wandering collectors like Broadstairs....

Weather insurance?