Fifty of the same card, and you will not get tired of it. Brush ink across the blank face and a little cat appears, curled on a crescent moon above a round potion bottle, with stars scattered through the frame. Every ink turns it into a different night sky, which is the whole point of a swatch collection.

• Off-white ink swatch cards
• 50 cards, one design
• 2.5 x 3.5 in
• Best with fountain pen ink, water-based markers, and watercolor

Notes from The Fox: A pack of fifty is the right size if you actually swatch every bottle. The witchy cat makes the pinks look just as good as the blacks.

Studio: Thousand Skies, San Jose, California