DS1 has a (mild) disability that means he can't ride a standard bike. We bought him a special one, not for Christmas, just because he needed it. Tbh he is not keen on it, but we thought having one would help his physical development. He would not have been impressed to get one as a present really, as he sees it as a chore to have to ride it.
DS2 would actively like a standard bike. I can't decide whether it would be unfair to give it to him as his Christmas present, seeing as we bought DS1 his outside any occasion like Christmas/birthday. But DS2 would think it was a good present.
If we didn't give it at Christmas, we would possibly buy it for him now, which would mean that he would have the autumn to enjoy it.
If we bought it now, we would inevitably have quite a bit less to spend on Christmas, (unless we managed to get hold of a second hand one).
I can't decide what to do.