Just-because gifts for a husband carry a strange burden. There is no occasion doing the explaining, so the object itself has to say why you bought it. In India especially, husbands are conditioned to get gifts on birthdays, anniversaries and maybe Diwali — a random Tuesday parcel gets read as either very sweet or mildly alarming.
₹3,000 to ₹5,000 is the right band for it. Below that the gesture reads as a top-up, above it he starts feeling he owes you something back, which kills the spontaneity the gift was meant to carry. This range buys a real steel-bracelet watch, over-ear headphones from a brand he has heard of, or luggage he would never have chosen for himself.
The honest split on this page is between things that make a boring hour better and things that solve a problem. Headphones and watches sit in the first group — he puts them on and the commute or the meeting improves. The Xiaomi power bank and the Aristocrat trolley set sit in the second: extremely useful, but they will read as practical before they read as affectionate. Both are fine, as long as you pick the group on purpose rather than by accident.
One filter before you order: check what he already owns. Four of these eight are headphones, which is a category where a second pair genuinely earns its place — one for the desk, one for the bag. A second watch is a harder sell if he already wears one daily.