A very simple little boat with a leaf sail--the kind our grandfathers may have sailed down streams years ago.

You will need:

• chunks of bark in varying sizes from 3-4
  inches long to as big as you can handle.
  Pine bark (mulch) is available at garden
  shops.
  
• sticks
  
• leaves
  
• an oyster shucker, awl or ice pick--some
  kind of tool with which to bore a hole
  
• optional--small cup hooks and string
  

What to do:

1. Bore a small hole in the center of the
   piece of bark to hold the mast for the
   sail. If you have a very large piece of
   bark, you may want to have more than
   one mast. Have the children bore the
   holes. Depending on the sharpness of
   the tools they're using, they will need
   more or less supervision.
   
2. Thread a large leaf onto a stick, and
   place the stick in the hole.
   
3. If you want to attach strings so the
   children can pull their boats (or not
   lose them downstream!), screw a small
   cup hook into the front edge and tie
   on a string.
   
4. Sail the boats in a big tub of water or
   water table or, better yet, take the
   children to a creek or stream and really
   let them sail!