We love these glass and cork storage jars, but you can also get Petri Dish dipping bowls and a 60 - minute sand timer hour glass. (geekwrapped.com)
To maintain focus, add a glass sand timer, which you can find at Marshalls stores, and mount a narrow clipboard wall display to keep important reminders in sight like this one from T.J.Maxx. (thefashionablehousewife.com)
Buy them a 2 Minute Sand Timer so it's easy for them to tell how long they should brush their teeth for. (thefashionablehousewife.com)