My chameleon wondered off in the house. Do you know any good techniques to capture a lost chameleon?

My sister was playing with the chameleon in the living room while she was watching TV in the dark. She stupidly left the chameleon there for a few seconds and then he wondered off. Do you know any good techniques for capturing a lost chameleon? It's already been a day and we have not found him. What is something chameleons can't resist?