At $6.95 (in Canada), it's unsurprising the Bekvam spice rack from Ikea's so well-used. More examples at the link.
Ikea Spice Racks: Use spice racks from Ikea to create a wall of storage for your kid's favorite books! Who knew there was a better use for spice racks than storing spices?! Learn more about this project over at Ikea Hacks.