Will They Always Play this Nicely?

We retrieved this toy from our attic, thinking that Ian is ready for the next stage in baby toys. It was Graeme's, though he never really had much of an interest in it. Then, that is. The minute Steve brought it into the living room Graeme was all over it and has been playing with it pretty much non-stop. It's one of those "boxes" you see at doctor's offices with a different feature on each side. Ian also seems to like it and it's a perfect complement to the Bumbo seat. I wonder how long they will play this well together? I probably should freeze this moment, right?!