Oooh, my favourite, this one!
I was all for ignoring it this year, but Ds has become all enthusiastic and since he is missing so many of the school 'treats' atm, I a playing along.
But I am quite proud of my minimalist solution!
DS is currently glued to the Secret seven books - so he has made a SS badge, and a cardboard cut-out of Scamper. Scamper will be attached to the side of DS's wheelchair, he has a collar and lead, and DS will hold the lead so that it looks as if Scamper is running alongside!