I read on babycentre and in a book about how playing with flour could be a fun activity to try, so I decided to give it a go, despite some parents warning against it in some forums. My baby was going to have someone supervising her all the time so I thought it would be all right.
For ease of cleaning up, I cut open a black trashbag (black helps with the contrast too), laid it on the floor, sat baby down on the bag, and poured a cup of flour in front of her.
We played simply by shifting flour around from spot to spot, and trying to write letters and draw pictures in the flour.
It was quite a messy affair (but not as bad as the time we played with edible paint). After that we washed our hands and used our wet hands to make handprints on the floor!