There isn't a stencil kit, but in addition to the coloring book idea, you can often find, on Ebay, the wall clings they had for the Lion King and the Lion King II years ago. Also, right now, on the Disney Deals ebay auction site, you can find a great Lion King lamp that has a nightlight. I think it's like $29.99 on the auctions.
There are also Lion King baby blankets that can be found on Ebay too. (Can you tell I'm all about Simba? I spent a lot of time looking for Lion King stuff I don't have on Ebay

)