One activity you might want to consider is to use kernels on your template.  There are lots of kernels you could use (kernels of popcorn, kernels of wheat, kernels of rice... explain to the children that a "kernel" is the soft, inside, (edible) part of a seed.  We use kernels to make most of our bread and cereal products.

• Print the template and color in the K k.  Point out to the child which is the capital K and which is the lowercase.
   
• Choose a number of kernels to put out before the kids.  Let them pick their favorites. 
    
• Let your child glue the kernels to the template or around the page as a frame.
    
• Point out that Kk is for Kernel.
    

• Whenever I do these projects with Kaitlyn, I get to draw pictures of words that start with the letter and then she gets to color them.  Don't stress about your drawing skills... the kids will love watching you draw!  Letter K words I drew were a picture of Kaitlyn, a kangaroo, kite, kettle, king