Paris vacation with children ideas?

Hello,

We're going to Disneyland with our kids (almost 3 and 6) in about a month. Since we'll be in Paris, I've organized accommodation for four nights in Paris.

The Eiffel Tower visit is also firmly booked. As for the rest of the trip, I'm currently running out of ideas for what we can do that's child-friendly. Are there any Paris-experienced families here with the ultimate tip for two days in Paris? It's just important to me that it's not too stressful 🙂

We spend the night near the Gare du Est