For us it always helps to go to the park or to softplay or just out and burn some energy. Being stuck in the house is the worst for one of my twins. It was pouring today but he was crying so much when I told him we could not go to the park. So I donned an extra warm alpacca long cardy, welly socks and welly boots and a not at all fetching rainhat and raincoat, wrapped him warmly too and took him to the park anyway for an hour. When we came back he was calm and sweet and not like a caged tiger. His twin brother did not want to come with us but is much more laid back and easy anyway so stayed home with daddy.
Otherwise I do stick to their routine as best we can.