small box; casket
A small box or chest, often used for storing small items or as a decorative container. 'Casket' can refer to a small ornamental box, not necessarily a coffin.
My grandmother keeps her jewelry in a small box.
There is a small wooden box on the desk.
箱 is a general term for a box of any size, while 小箱 specifically refers to a small box.
Standard kanji spelling for a small box.
Rare variant using 筥, an older character for a box or basket.
Rare variant using 匣, an older character for a small box or case.
Compound of 小 (こ, 'small') + 箱 (はこ, 'box'), with rendaku voicing of はこ to ばこ.