What is a fun activity for 15 month old toddlers?

Toddlers are messy.. they get messier as they get older I think. As far as something to do where she won't make a huge mess, how about going to the park, playing outdoor? coloring, playing with playdough, playing with a ball, etc. Also, I started to teach my son how to clean up after himself at this age. HE wasn't good at it but we worked on it, he's now three (almost) and knows that if he takes out toys, he must return them from where he got them, before he can take out more. It's a learning process, one which takes a LONG time.. (;

What do you think of playing with ball,i mean a small ball which she can hold and can throw out and getting back it.

How about Outdoor Bowling Toddlers follow directions, use eye hand coordination and gross motor skills when they bowl during outdoor play with this game by Karen M. Materials: Empty 2 liter soda bottles and balls. Description: Set up plastic bottles like bowling pins, have toddlers use a lightweight plastic ball to roll from a short distance to knock the bottles down. This will be best accomplished by showing them, the first time, what you want them to do. The bottles do not have to be set up in a specific way so try to get the toddlers to help set up as well as bowl.