I had planned to save these magnet sets for Christmas, but we ended up taking them out on a rainy afternoon:

Jumbo Marble Set
Magnetic Bingo Chips
Floating Magnet Matching Set

Our children, ages toddler through 7, are all having a blast with them. I don't think there are any choking hazards apart from the bingo chips.

The eldest will be getting some Teifoc. It's a German-made building set that uses real mini bricks and mortar (which dissolves in water, so you can reuse the bricks). It looks pretty neat. I'm hoping the buildings will be sturdy enough that little siblings won't be likely to demolish them.

Since standard marble runs are a safety concern here, we decided to invest in these Duplo tubes and stone quarry. I'm looking forward to seeing what gets rigged up with them. (The older children have a place where they can do things with small parts, but they seem to have more fun when they're all playing together. smile )