Quiet Time Activity ideas?

[Salad]

My DD is 18 months old and I am looking for some activities we can do together that are more on the quiet side. I am hopeless when it comes to playing with her as I get bored easy with the playing and feel I am supposed to be cleaning or something, I know it doesnt matter but its something I cant help.
She loves to colour in and I enjoy colouring in with her but what other things besides books and painting can we do that involves just sitting and playing??

[feeb]

Blocks building towers.
Rolling a ball to each other/
Blowing bubbles.
Train set
Dolls house

[littlelara]

toddler swing, playdough, singing songs, reading stories

[~Kim~]

puzzles, leggo/duplo, digging in the garden/sand pit