KanjiJLPT N1
Basin

basin, lantern festival, tray

Mnemonic

You part the cupboard doors and pull out a large dish — but not just any dish. It's the sacred basin, the wide, shallow tray your family uses once a year to honor ancestral spirits. You cradle the basin carefully and carry it to the altar, feeling generations watching.
Additional thoughts
Visualize splitting open (parting) a cupboard to reveal a special ceremonial dish that is actually a basin/tray. The part radical sits atop the dish radical, like something being divided over a shallow vessel. Connect to the Obon festival imagery for extra stickiness.
Quick recall
Part the cupboard, find the dish — it's the ancestral basin.

Details

The keyword for 盆 is basin. This kanji refers to a shallow, flat container or tray, often used for holding items or serving food. It is closely associated with the Japanese Obon festival (お盆), a traditional event honoring the spirits of ancestors, where such trays play a ceremonial role. More broadly, it can denote any wide, shallow vessel resembling a basin or bowl.
On'yomi
ぼん