Have you got top gym cards? They have good ideas, differentiated activities or children of all abilities, illustrated and ideal for the non-specialist. I'll see if I can find a link. If not I can scan & email, but am waving on a residential tomorrow, so would be at te weekend t the earliest.
It's really hard, as a parent of a wheelchair user and a teacher I often wonder what the point is. In fact for my child he hates it as it really emphasiises his difficulties, we'd had all sorts of excellent ideas from physics etc but IMO it's impossible to provide truly inclusive pe sessions in a classroom setting. I may be biased because my son, now aged 8 but it's been the same since he started school, is so aware of his physical limitations that he finds it a major challenge. The only thing we've had any success with is street dance classes (at school).
I'd be very interested to see if anyone has had any real success at this and if so how they did it. My son now does his physio exercises during PE time.