What is Legos and Play-Doh?

Jack doesn't have toys like these in Room and doesn't really understand how to play with them once Jack and Ma escape. Ma feels that Dr. Clay is judging her when he learns that Jack has never had Play-Doh. Ma has created toys to entertain Jack out of ordinary things, such as the cardboard rolls from toilet tissue and boxes from their cereal. Jack is interested in these toys but hesitant in some cases.