pencil case; pencil box; writing brush case
A container for writing implements, traditionally for calligraphy brushes but now commonly used for pencils and pens.
I keep pencils and an eraser in my pencil case.
I got a new pencil case.
Standard kanji spelling.
Kana spelling is common in everyday writing, especially for children or when the kanji is not needed.
Compound of 筆 (fude, 'writing brush') and 箱 (hako, 'box'). The reading ふでばこ results from rendaku voicing of はこ to ばこ.