The Best Man's Stag Do Emergency Kit: 10 Items You Need to Pack

Every best man becomes, by default, the group’s medic, banker, IT support and lost-property office for the weekend. When a lad’s phone dies, when the groom’s nursing a savage hangover, when someone’s got blisters by lunchtime, they all turn to you. A small, well-chosen emergency kit means you actually have the answer instead of shrugging — and it’s the difference between a problem solved in ten seconds and a half-hour detour hunting for a pharmacy. Here are the ten items every best man should pack.

Why the emergency kit earns its place

A stag is a weekend of constant small crises — nothing dramatic, just a steady drip of hangovers, blisters, dead batteries, lost bookings and dodgy stomachs. Individually they’re trivial; collectively, unprepared, they eat your time and derail the group’s momentum. The emergency kit is a small bag that pre-solves the lot, so that when someone inevitably needs a painkiller, a plaster or a charge, you produce it instantly and the weekend rolls on. It’s the most quietly appreciated bit of prep a best man does — nobody notices it until the moment it saves them.

The ten essentials

1. Painkillers

The number one item. Paracetamol and ibuprofen for the hangovers, headaches and general wear-and-tear of a heavy weekend. You will hand these out constantly. Bring more than you think you need.

2. Plasters and blister plasters

A full day of walking, often in new or smart shoes, destroys feet. Blister plasters in particular are a weekend-saver — a limping groom is a miserable groom. Regular plasters for the inevitable minor cuts and scrapes too.

3. Rehydration sachets

The hangover’s natural enemy. Rehydration salts or electrolyte sachets do more for a fragile group than any fry-up, and getting them into people the morning after (and ideally before bed) keeps the weekend functional.

4. A phone battery pack and spare cable

The most-needed bit of tech. With everyone using their phones all day for photos, the group chat and navigation, batteries die by mid-afternoon. A decent power bank and a spare cable keep the group connected and contactable — genuinely essential, not a luxury.

5. Some spare cash

A float of emergency cash solves a dozen problems — the taxi that won’t take card, the venue that’s cash-only, the lad who’s been locked out of his banking app. Not the kitty — a small, separate emergency stash that means a cash problem never strands the group.

6. Printed copies of key documents

The analogue backup that saves the day when phones fail. Printed copies of the accommodation booking, the activity confirmations, the addresses and the key contact numbers mean that when someone’s phone is dead or has no signal, you still have the vital details. Low-tech, high-value.

7. Antacids and indigestion tablets

A weekend of fry-ups, kebabs, lager and questionable late-night food wreaks havoc on stomachs. Antacids and indigestion tablets are unglamorous and constantly needed.

8. Sick bags

Hope you don’t need them; be very glad you have them. A couple of sick bags in the kit can save a taxi, a coach seat or an accommodation carpet — and the cleaning fee or fine that would otherwise follow.

9. A basic first-aid kit

Beyond plasters: antiseptic wipes, a bandage, some tape. Stags involve activities, drink and clumsiness, and minor injuries happen. A small first-aid kit handles the cuts and grazes without a trip anywhere.

10. Weather kit: sun cream or a foil poncho

The British weather demands readiness for both extremes. Sun cream for the rare good day (a sunburnt groom is a bad look in the wedding photos weeks later), and a cheap foil poncho or two for the likely downpour. Small, cheap, occasionally weekend-saving.

A light financial note tucked into the kit philosophy: several emergency-kit items exist specifically to prevent *bigger* costs — the sick bags that save a cleaning fee or taxi-soiling charge, the spare cash that avoids a stranded-group crisis, the document copies that prevent a missed, non-refundable booking. So the kit pays for itself the first time it’s needed. On the cash specifically: keep the emergency float separate from the group kitty and from your own spending, clearly as “break glass in emergency” money, so it’s not confused with the collected funds. Based on internal 2026 transaction data across thousands of group trips, small unprepared mishaps — a soiled taxi, a missed booking because the details were on a dead phone — cause outsized costs and stress; a few quid of emergency kit prevents them. The cheapest insurance on the stag is the bag of plasters and a power bank.

The bottom line

The best man’s emergency kit is the small bag that quietly holds the weekend together. Ten items — painkillers, plasters, rehydration, a battery pack, spare cash, document copies, antacids, sick bags, a basic first-aid kit and weather gear — pre-solve the constant little crises of a stag, so you produce the answer instantly instead of hunting for a pharmacy or watching a small problem snowball. It costs a few quid and a few minutes to assemble, it fits in a daypack, and it makes you the best man who always has exactly what’s needed. Pack it, and you’re ready for the hundred small things a stag throws at the man in charge.