* A pencil with a Spanish flag design: Or a design featuring a famous Spanish landmark like the Sagrada Familia.
* A Spanish dictionary (mini or pocket-sized): For looking up words while studying.
* A small notebook: Perhaps with a Spanish-themed cover.
* Pens in the colors of the Spanish flag (red, yellow, and red): Or featuring Spanish-inspired patterns.
* Erasers with Spanish-related imagery: Think flamenco dancers, bullfighting imagery (though this can be controversial), or tapas.
* Highlighters: In the colors of the Spanish flag or other vibrant, Spanish-inspired colors.
* A small ruler: A basic school supply.
* Sticky notes: With Spanish words or phrases written on them.
* A tiny Spanish phrasebook: Useful for learning common phrases.
* A bookmark with a Spanish design or quote: If they're also including a book.
The contents would depend on the age and purpose of the owner. A child's pencil case might have more playful items, while a student's might be more geared towards studying.