Obviously some Michelin-Star restaurant that Howard has booked for them that Harry is super uncomfortable to be eating in. I'm guessing Peggy and Howard probably tell non-classified stories of their war days, and Harry listens while trying not to set anything on fire.

Another cracky crossover oneshot that must be written! If Howard has any valuable tech on him, he'll be so angry when Harry accidentally kills it.

But Merlin has magic, and Howard would be all over trying to figure out how the fuck that worked.

Howard + Magic would either be hilarious funny or just scary.