Complete a 1,000-piece jigsaw puzzle.

Build and finish a model or kit (ship, gunpla, LEGO, diorama).

Try a genuinely novel activity (axe-throwing, pottery, escape room).

Plan and take a full day-trip somewhere new.

Attend a multi-day or destination festival or cultural event.

Complete a defined collection set — a finite, named series.

Finish a long or notoriously hard video game.

Complete a large multi-week build project (detailed model, diorama).

Reach a competitive rank or win a tournament in a hobby game.

Take a dedicated trip to a place tied to a passion.

Complete a named long-distance trail or multi-day wilderness trek.

See a natural or world wonder in person.