At home workouts?

Can anybody tell me good workouts to do at home? I haveee to work out today after work because I was too tired last night after work but Im going to NYC with my parents today to see Wicked on Broadway so I dont have time to hit the gym, I want to do atleast an hour of RI30 will take up atleast a half hour of it.. so what are some suggestions for the other half hour besides running? And would it be smart to add all the walking around in the City to my exercise calories?