I use old formula containers as drums/ piggy banks...I usually wrap them up with wrapping paper and sometimes Matilda has fun unwrapping them #-o

We have wooden spoons that Matilda bangs on her formula tins.

We have made the rattles with baby food jars with the lids glued on with rice or pasta inside. I like the water idea though...

Magazines are really good for entertaining them, Matilda looks through them and rips them apart.

Matilda has an old phone & calculater which she loves walking around with and pretending she's on the phone.