how about getting a tool/ tackle box plastic type with movable walls to adjust to the size required.Optum provides some prescriptions online and Walgreens does the rest. It's easy enough for us to fill them at this point. Optum saves us money by providing 90 day supplies. They are a division of United HealthCare that administers our Medicare Advantage plan. Ma being a retired nurse can make sure I do it right. l would like larger cells in my tray because of the number of horse pills like potassium, calcium, etc.