What is the healthiest thing to keep at your desk for snacking?

Something with protein or fibre, because the problem with typical desk snacks is a fast blood sugar rise followed by a slump that makes you hungry again. Options that keep well without refrigeration: roasted chana, peanuts and mixed nuts in a portioned container rather than a large packet, roasted makhana, seeds, and fruit that travels well. Portioning matters more than the food itself — nuts are genuinely healthy and easy to eat 400 calories of absentmindedly. Keeping a water bottle within reach also helps, since thirst is frequently misread as hunger in the afternoon.