You can call many of the different notions manufactuers to see if they will give you a GCC or COC with the required CPSIA infomation. The supplier supplied certificates will hold you until Feb 10th 2010, unless things are changed to allow component testing after that date. There are other exempt materials that could be used to make buttons as long as they are untreated like shells, sea & freshwater pearls, horn (bone), and many other items found on the exemption list. The current list of exemptions and items that will never be exempt are here
http://www.cpsc.gov/businfo/frnotices/fr09/leaddeterminationsfinalrule-draft.pdfRemember even if a product is made from all exempt materials it only means it's exempt from the lead testing not any other parts of the CPSIA or any of the FTC laws if they apply.
Here's some further reading for others that just may now be hearing about this law.
Here's some reading to get you started on understanding the CPSIA.
The main CPSC website
http://www.cpsc.gov/The CPSIA main website
http://www.cpsc.gov/about/cpsia/cpsia.htmlCPSIA guidance for small businesses/crafters includes a quick look guide Table : B exempt raw material list
http://www.cpsc.gov/about/cpsia/smbus/cpsiasbguide.pdfThe current overview of the "final" determination of raw materials for exepmtion ( a more indepth version than Table B)
http://www.cpsc.gov/businfo/frnotices/fr09/leaddeterminationsfinalrule-draft.pdfTracking labels
http://www.cpsc.gov/about/cpsia/sect103policy.pdfCPSIA's FAQ page
http://www.cpsc.gov/about/cpsia/sect103.html#103q8 The CPSC's age determination guideline
http://www.cpsc.gov/BUSINFO/adg.pdfA timeline from the CPSIA
http://www.cpsc.gov/about/cpsia/rulemaking.pdfStandard Operating Procedure for Determining Total Lead (Pb) in
Children’s Metal Products (Including Children’s Metal Jewelry) found at
http://www.cpsc.gov/about/cpsia/CPSC-CH-E1001-08.pdfEven non-metal components must be tested using destructive digestive testing read more here
http://www.cpsc.gov/about/cpsia/CPSC-CH-E1002-08.pdf Small Parts Regulations Summary
http://www.cpsc.gov/BUSINFO/regsumsmallparts.pdf Small Parts labeling
http://www.cpsc.gov/BUSINFO/label.pdf Maybe some one else has a link to a plain english version of the small parts regulations, but these 2 links are the best I have.
For fiber & fabric based products there maybe additions laws & regulations that need to be followed under a seperate government agency known as the FTC (Federal Trade Commission).
FTC Labeling requirements
http://www.ftc.gov/bcp/edu/pubs/business/textile/bus21.shtm#covered
