Legos and Lincoln Logs sound awesome!! What a great idea!
Puzzles could be good if they are relaxing and don't increase your symptoms. Pick easy ones.
Same for computer. Does it increase your symptoms? Does reading cause you problems? If so, then you should limit or avoid it.

TV is really really tricky. What are you wanting to watch? An hour might be okay if it is something slow-paced like PBS or documentaries. I would be hesitant to watch an hour of an action show that has a lot of music, jerky or fast editing, or anything like that. That is a minefield of sensory overload just waiting to blow your brain out your ears. Think more like Caillou or Little House on the Prairie Old-fashioned is good in this case -- but only if it doesn't increase your symptoms!