Clowns, magicians and Chuck E. Cheese’s are so 20th-century. For your little birthday honoree, go with this portable, inflatable planetarium service, which can be set up in your house. It holds up to 35 people, costs less than $200 to rent, and is presided over by Denise Vacca, a friendly former producer from the Franklin Institute’s Fels Planetarium.

Stars on the Move | 610-715-6853 | http://www.starsonthemove.com