Recommendations for things to do with family(with young kids) during this cold weather

Have family visiting from out of state. Includes kids ranging in age from 2-12 years old. Trip was planned and paid for long ago so it is unfortunate that we have this cold spell going on. Wondering what are some indoor activities you all would recommend that would entertain young children. For the adults, we will mostly be looking forward to the lunches and dinners so that’s all taken care with the fantastic cuisines houston has to offer 😀