I'm not sure about carpets, but for plastic table tops and almost anything else it's GooGone. That yellow stuff that takes off sticky price tags. You can get it at a hardware type store or even Dollarama.
Yay!!! I actually had some & it worked perfectly...plus made the slide extra fast for the kids (she had colored the slide too! Thank you so much!
Children are great imitators.
So give them something great to imitate.