It would be extensive, follow your passions and ignore time or energy to pursue. Likely, it includes work, not because you need to but because you find it meaningful.
Start a business.
Lead a non-profit.
Consult, teach or write.
Manage rental properties.
Travel a month abroad.
Host family at lake all summer.
Actually balance kids, aging parents and well-being.
Think of your list if you retire at 65.
Yet, age 65 is the focus for many.