The last 2 days, I have helped out a friend by watching her kids as she works. My kids have LOVED having friends to play with. The kids are the same ages as my kids, so they are in mostly the same stages.
Today I walked all 4 kids and the dog to the local park.
The boys decided our mini ping-pong table would make a perfect train table. The kids all played great together, but it did give me a taste of what 2 pairs of twins would be like! whew! :)