Our youngest, a budding emergent reader, beginning speller happened upon large sheets of 2-inch peel-off, brightly-colored sticky letters.
A gold mine!
Within 40 minutes she had completed the equivalent of a month's worth of spelling lessons, without tears, without coercion. Best of all, she remembered the words she spelled, days later. A win-win-win situation.
Learning, fun, retention.
That is what I call a productive day!