This study will evaluate whether a 5-day, 6-hours-per-day therapy camp called Camp Hand to Hands can help children with hemiplegic cerebral palsy improve their walking ability, stair climbing, and gross motor function. During the camp, children will wear a resting hand splint covered by a soft puppet glove on their stronger arm to encourage use of the more affected arm while participating in fun, play-based activities such as obstacle courses and crafts. Participants will also wear a wrist-worn ActiGraph accelerometer during camp sessions to characterize movement and physical activity levels during therapy activities. The study team will conduct daily assessments of each child's walking endurance and stair navigation using the 2-Minute Walk Test (2MWT) and the Timed Up and Down Stairs (TuDS) test during the 5-day camp. Gross motor function will also be assessed before and after the camp using the Gross Motor Function Measure-88 (GMFM-88) Dimensions D and E. The study seeks to determine whether this short CIMT program leads to improvements in mobility and gross motor function beyond the upper extremity.