St has learned to crawl......so i'm constantly in the need of things to keep him busy to get anything(!!!) done around the house. when Ji was little, i learned that most of the time ordinary household items are far more interesting than real toys....or a combo of the two :)...
just water in the bottle was fun, but the marbles
swirling around (or both :) were even more fun :)
make sure the lid is on really tight!
the shadow of the bottle was pretty cool also...