You can use Tupperware Toys with confidence!  In September of 2007, Tupperware issued this press release:

For over 60 years Tupperware has been designing products that help simplify people's lives. As one of the world's most trusted brands, Tupperware products continue to meet or surpass Government safety standards. This dedication and attention to safety applies not only to our food containers, but also to Tupperware Toys. Tupperware Toys are all tested for safety by independent, certified laboratories and Tupperware Toys have met or exceeded all applicable government and industry safety standards, including those applicable to heavy metals such as lead.