There is a poster in Toxic Wasteland for the band Tears Of Blood. Tears Of Blood is Justin's favorite band in Wizards Of Waverly Place and is mentioned multiple times.
A candle in Toxic Wasteland is said to be the scent of "Vanilla Death". This is a "Perfume" said to be worn by Juliette to keep the monster hunters from knowing she's a vampire in Wizards Of Waverly Place.
Toxic Wasteland is a parody of the store Hot Topic.