As the holidays approach, parents are ticking off toy wishlists for their children. No one wants to buy something that is unsafe.

Still, are certain fidget spinners made with lead? And what’s really in that wad of slime?

The United States Public Interest Research Group recently published its “Trouble in Toyland” report (you can read the full text in PDF form). The group says that over 30 years, its yearly toy reports have helped recall more than 150 toys.

The Toy Industry Association responded to the report, which called for more regulation, saying standards applied to toys are more stringent than other consumer products. The association pointed out that some of the items in the report aren’t actually categorized as toys, like the children’s jewelry, balloons and magnets, so they are not subject to the same safety standards.