The goal of this clinical trial is to test the MedMemos Intervention with parents and children who have received a bone marrow transplant. The main study questions are:
* Is the MedMemos intervention acceptable to patients and families?
* Is the MedMemos intervention feasible for patients, families, and healthcare providers?
* Does MedMemos help patients and families take their medications better?
Participants will be asked to complete surveys, attend 4 intervention sessions, and use an electronic box or pill bottle to store their medications in.