The best gift for a tennis coach is a ball hopper — the Tourna Ballport Deluxe, which stands up and opens into a stand. A coach picks up several hundred balls a day, and the hopper is the one piece of equipment in their kit that is doing physical work on their back every single lesson. If the budget is smaller, a case of practice balls is never wrong: a coach gets through balls at a rate a club player would find alarming. Under $25, a thirty-pack of overgrips.
The useful insight here, if you are a parent or a student buying for a coach: a coach's kit wears out in a completely different pattern from a player's. They are on court five or six hours a day, feeding balls rather than playing points, bending down constantly, in the same shoes, holding the same racquet handle in the heat. So the things that run out for them are volumethings — balls, grips, socks — and the things that help them are labor-saving things. Almost nothing a coach needs is expensive.
One thing to avoid: do not buy a coach a racquet, and do not buy them a frame upgrade. They have strong opinions, their frames are usually matched to each other, and they almost certainly get them through a brand relationship.
The table is ordered by price, cheapest first, not best to worst.
Under $25: what they get through fastest
A thirty-pack of overgrips. A coach holds a racquet for five hours a day, often in heat, demonstrating strokes. Their grip goes slick faster than anybody's and they replace it constantly. Tourna Grip — the dry, chalky blue one — is the standard answer for high-volume, high-sweat use, and the big pack is the gift.
A handful of vibration dampeners. Small, cheap, constantly lost, and a coach loses them faster than anybody because their racquets live in a bag that gets thrown in and out of a car eight times a day.
$25 to $60: volume consumables
A case of practice balls. This is the gift a coach will actually use tomorrow. Feeding drills destroys balls far faster than playing does — the felt goes long before the pressure does — and balls are a pure business cost for them. Penn Championship by the case is the volume answer; the whole economics is in the tennis ball ranking.
Padded tennis socks. Six hours a day on a hard court, every day. A coach's feet take more load than any of their students', and padded court socks are exactly the kind of small, slightly indulgent purchase people skip for themselves. See the sock ranking.
$60 to $150: the labor-saving gifts
A ball hopper, and specifically a good one. If you buy one gift, buy this. The mechanics are simple: a coach bends to collect balls hundreds of times a day, and a hopper removes the bending. The Tourna Ballport Deluxe is the pick because it does two jobs — collects, then stands upright and opens as a stand to feed from, which saves lifting it again. The alternatives are compared in the ball hopper ranking.
A roll-along collector. The Tourna Fill & Drill fills by being pushed over the balls rather than by being pressed down onto them, which is a different motion and an easier one across a full basket. Worth considering over a standard hopper if the coach has mentioned their back.
A teaching aid they do not own. The TopSpin Pro is the one that is genuinely a coaching tool rather than a gadget: it constrains the racquet path so a student physically cannot brush the ball the wrong way. Useful to a coach who teaches a lot of beginners and juniors — the training aid ranking explains what each one actually teaches.
A cheap second bag. Not a main bag — a coach has one. A cheap compact bag like the Athletico is the one that lives in the car permanently with a towel, spare grips and a first-aid kit in it.
If you are a parent organizing a group gift
A group of parents at the end of a season can usually reach $150 to $250 without anybody feeling it, and at that level there are two good answers.
A hopper plus a case of balls. Boring, correct, and used from the next lesson onward.
Or a gift card to a tennis specialist. This is the one case where a gift card genuinely is the better gift: a coach knows exactly which string, which shoe size and which frame they want, and none of those are things you can guess. Pair it with one small physical item so there is something to open.
What to avoid
A racquet, strings or shoes. All three are fitted or opinionated, and a working coach has usually sorted all three out already, often through a brand relationship.
Novelty coaching gifts. "World's best coach" mugs and tennis-print ties. They are a gift about coaching rather than a gift for coaching. The handwritten card from the student is the sentimental part; the hopper is the present.
Anything that needs storing. Coaches move between courts and clubs with everything in a car. Bulky items that are not collapsible get left at home.