My sister did that with her two kids when they were very young. They had their toys all over the TV room floor and were asked to pick them up three times. Then she swept in like Hurricane Dora and put all of the Little Ponies, Barbies, etc. in a trash bag and told them she was throwing it all in the trash (she actually stored it all in the garage). They whined and cried but after a few days didn't even miss the toys or ask about them again. She eventually gave the toys to a shelter and the girls didn't even realize they were gone.