candy box; confectionery box
A box for holding sweets, candies, or confectionery; can refer to a decorative gift box or a simple storage container.
I received a beautiful candy box as a souvenir.
菓子箱の中にはクッキーが詰まっている。
The confectionery box is filled with cookies.
Compound of 菓子 (kashi, 'sweets, confectionery') and 箱 (hako, 'box'). The reading かしばこ is a straightforward combination with rendaku (voicing) on the second element.