Perpetual planning

I'm looking for ideas of things that I can plan to do with Mathew during the Summer Hols. I know it's a few weeks away yet, but I don't get to spend too much time with him, what with work being flat out busy at the very time that he has some spare days he could spend with me, so I want to make the most of every available second. Philippa has already pencilled in some playdays with other families, and we have a couple of barbecues in the calendar already (one of which we are hosting), so it's not as if he's facing six weeks of absolute nothingness, but it would still be nice to have some other activities planned.
Maybe this is a situation where my work head and my home head are getting a bit confused with each other and overlapping. I'm so used to making sure that our visitors have things to occupy them while they are occupying one of our caravans that I feel I have to do the same for my offspring. But satisfying customers who have paid for a full week of fun is different to satisfying a son who is supposed to be having a month and a half of rest. After a tough year of schooling, it may just be that he will be happy to chill at home and play with his toys, and that dragging him out all over East Anglia will actually annoy the Hell out of him. But - again - it would be nice to have the options.

RC 19-6-25