Here are some possibilities, with some examples:
General References:
* Dictionary: A staple for any student, especially younger ones.
* Thesaurus: Helps students find synonyms and improve their writing.
* Grammar Handbook: Provides rules and examples for writing correctly.
* Style Guide: Especially important for college students, helps ensure consistency in formatting and citations.
Subject-Specific References:
* Science Textbook: Essential for understanding scientific concepts and experiments.
* History Textbook: Provides information and dates for historical events.
* Literature Anthology: Contains famous works of literature for analysis and study.
* Math Textbook: Provides formulas, examples, and practice problems.
Other Possibilities:
* Notebook: Students often keep a notebook handy for taking notes, recording ideas, or doing practice problems.
* Planner: Helps students stay organized with assignments, deadlines, and schedules.
To give you a more specific answer, please tell me:
* What subject are you interested in?
* What grade level are you thinking about?
Once I have this information, I can give you a more tailored suggestion!