I also remind myself our other DC need time away from DS1 and with me and DH together. When DS1 is around, his needs mean he gets more attention. DS1 is hard work and intense even though other DC aren’t directly caring for him. We do a lot where DH and I split up and one of us cares for DS1 and the other goes with any combination of the other 3, but sometimes it is good for them to have both our attention.
@lougle is it DD1 wouldn’t cope with the physical aspect of kayaking, canoeing, etc. or is it she wouldn’t cope more generally? If the former, have you looked at any adaptive sessions? DS1 has been adaptive kayaking and canoeing. Physically, DS1 doesn’t do anything other than sit there, but the experience is good for him even if he moans/shouts/growls. He has also done things like adaptive sailing, surfing and wet wheels. I think your DD would enjoy rebound therapy, too.
@Wellzizizbetter what about surfing, kayaking/canoeing, climbing, archery, skiing? They are all available as adaptive sessions if needed. Gymnastics (DS3 has a 1:1 session as part of his EOTIS package. It isn’t a gymnastics session that those who know mainstream sessions would be recognised, but DS3 enjoys it. His favourite part is the foam pit.) Cookery lesson (DS3 has a 1:1 lesson with an ex food technology teacher, but I know some who use specific cookery lesson companies and I know another MN’er's DS has a lesson with a chef). Horse riding.
Do you have any soft play centres who offer adult sessions or SEN sessions without an upper age limit? Or any centres with inflatable assault courses?
Outdoor activity sessions. Like forest school. Some provisions will work with DC up to 25, some offer 1:1 and some don’t require LA (education) funding.
Driving experience. There are companies who will still offer experiences to those who never be able to drive. Along similar lines, depending on DS’s ability, a flight simulator.
Would DS go for a bike/trike ride, or is it in the same category as going for a walk? There are inclusive cycling sessions run across the country where you can try different bikes/trikes.
What about a personal trainer? It doesn’t have to look like a tradition PT session.
For an overnight adventure trip, you could look at Calvert Trust or Bendrigg.