The excellent Synth DIY meet in Robinsons College in Cambridge is on this weekend (July 27th).
We attended a few years back and had a great time - if you want to meet up and enjoy some synth type activities, including an excellent collection of instruments while the rest of your family enjoys the delights of Cambridge, why not pop in?
Paul Maddox - one of the organizers writes:
The main event day is July 27th, but people often arrive the day before and leave the day after.
More details and links to Room booking (for those staying overnight) on the website - http://diy.synth.net/uk/