Some of the available tool shapes:
Here are Amazon links to my three favorite tools:
Update (2015): They now have charms available to make necklaces, keychains, etc. They turn out so cute and make great gifts!
(FTC Disclosure: Blissmade Designs is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com)