The real chaos here is the relationship, not the gift. A UPSC aspirant in their second or third year is carrying weight most people at the family dinner table cannot see. Relatives ask 'kab hoga?' with a smile that isn't really a smile. Gifting them something hollow, a motivational calendar, a ceramic mug with a quote, is not just wasteful. It signals, quietly, that you see them as someone who needs encouragement rather than someone already working harder than anyone else in the room.
What works is anything that directly attacks the three things that degrade in a long prep cycle: eyes, posture, focus. A proper anti-flicker study lamp is not a luxury; aspirants routinely study past midnight under tube lights that were built for kitchens. Blue-light blocking glasses protect against hours on PDFs and YouTube lectures. For GATE or CAT candidates especially, a scientific calculator that is actually permitted in the exam hall has real, daily utility. These are tools they will pull out the morning after you give them.
The worst gifts assume the aspirant needs motivation rather than infrastructure. A Pomodoro timer, a habit-tracker notebook, a book on atomic habits: all say the same thing without meaning to, 'your problem is mental, not logistical.' It reads as condescending. These aspirants are already harder on themselves than any gifted object can communicate. The 'you can do it' category works on people who are doubting themselves. Most serious prep candidates are not doubting. They are doing.