Playfulness is apparently the ability to make regular things humorous or intellectually fascinating.
In that sense, playfulness can be considered a skill that we can all develop and harness
Be more observant and mindful to start. Write or mentally note three spontaneous events from each day.
Your list should include small moments that make you laugh and remind you of the good things in life.
Try not to be afraid of enjoying non-adult hobbies. Many socially acceptable adult games don't encourage play.
Rules govern board games, which are usually competitive. This can inhibit creativity and fun.
Since 'therapeutic' adult coloring books were popularized, adults can now color without shame.