Matilda loved being active at that age and would roll around heaps. She loved the baby food jars with rice or pasta (like what Mel said before) and would love to sit & look at things twirl... I got a few of those sparkley things you hang up and when the wind blows they twirl? From $2 store and she loved staring at them.

Anything that made noise and was light would amuse her for 15 minutes at a go...