Funny that you mention Pandemic, we finally got around to playing it with the kids, and it was great. They are just entering the age where they get it.
So far only played the simplified rules, none of the Legacy parts, and beat the game for the first time.
The older is 9, found it challenging in the beginning, but caught on. Younger is 5, definitely not into Pandemic.
Speaking of snakes and ladders, we had a very fun project of making our own. Basically I stole the positions of snakes and ladders from another board, but we drew and painted all of it on thick cardboard. Small enough and really fun project. You can customize to your fancy.