LEGO Ideas 123 Sesame Street 21324 contains 1,367 pieces and recreates the 123 building and Hooper's Store. The interior includes Bert and Ernie's apartment, Elmo's bedroom, Big Bird's nest and other spaces with objects linked to the programme. It includes Elmo, Cookie Monster, Bert, Ernie and Big Bird minifigures, plus Oscar the Grouch and Slimey. The street features lamp posts, rubbish bins and multiple references to Sesame Street episodes.