Spring training may be just around the corner, but the crack of a bat against a ball can keep lil ones entertained year-round. When my baseball fanatic turned four, we didn't let the cold Winter months dampen his team spirit. Rather, we planned an all-star indoor bash for the lil slugger and his friends. With an indoor batting cage facility as the venue of choice, the party started with some warm-ups, a few drills and then a scrimmage between the guests. Check out this slideshow for tips on how to plan your own themed party.