A grassroots festival with a very loyal following. Activities for kids often include musical instrument / mask-making, as well as face painting and juggling (although sometimes all kids want is an open space to run around in, and they certainly have that).
There are also Bonfires, Nature Walks and Sheepdog Trials.
With some of the bigger festivals cancelling this year, here is a selection of my favourite smaller and more alternative festivals offering something a bit different from the mainstream:
2000 Trees has great music and plenty on offer for kids: musical instrument / mask-making, face painting, juggling, bonfires and nature walks (although sometimes all kids want is an open space to run around in, and they certainly have that too). twothousandtreesfestival.co.uk
The Green Man Festival is a medium size festival set in beautiful countryside in the Brecon Beacons in Wales. The atmosphere is relaxed and welcoming and the music tends to have a modern yet folky edge. You can camp for a week to make the trip into a holiday. greenman.net