KiddyCharts offers free photo personalised charts for your kids to help with everything from encouraging them to read, to potty training, and doing simple chores. They even have charts to ease separation anxiety.
Check them out, and see if they can help you with your little ones, and their specific challenges. Charts are suitable from age 18 months plus because they can be both text and image based. The KiddyCharts star helps guide younger kids, and you can build the charts with them too. In our experience, this means there is a much greater chance of any charts being successful.