Every experienced event manager carries spares, and most carry the wrong ones. The kit grows by accretion — a thing failed once, so it joined the bag forever, and three years later you are lugging a flight case of items that solve problems you have not had since. Meanwhile the one cable that actually strands a door when it dies is the one you forgot to double up.
A spares kit is a bet about what will fail. The skill is not carrying everything. It is knowing which failures stop the door and which are merely annoying, and packing for the first kind only.
The test for whether something earns its place
Before anything goes in the bag, ask one question: if this fails and I do not have a spare, does the door stop. If the answer is yes, carry two. If the answer is no, leave it and carry the time to improvise instead.
This test is unkind to a lot of beloved kit. A spare label printer feels prudent, but if the printer dies, the door does not stop — you check people in without printing a badge and sort badges later. So a spare printer is a nice-to-have, not a must-carry. A spare charging cable, on the other hand, is the difference between a working scanner and a dead one at the worst moment, and it weighs nothing. Carry three.
Pack for the failures that stop the door, not the failures that annoy you. The two lists are shorter and different than instinct suggests.
What actually stops a door
Across most events, the things that genuinely halt check-in are a small, boring set. Power, the device, and the network. Everything else degrades the experience without ending it.
| Item | Carry a spare | Why |
|---|---|---|
| Charging cables and a power bank | Always | A dead device stops a lane outright |
| A fully-charged spare device | Yes, at least one | Lets you swap in seconds, not minutes |
| Mains extension and a multi-gang | Yes | Venues never have power where you need it |
| Mobile hotspot or data dongle | Yes | The fallback when venue wifi dies |
| Label or badge stock | If you print | Runs out faster than you think, mid-rush |
| A printed copy of the guest list | Yes | The ultimate fallback when all else fails |
| Spare label printer | Optional | Door survives without printed badges |
| Spare signage, pens, tape | A few | Cheap, light, occasionally save the day |
The printed guest list deserves a word. It feels old-fashioned next to a slick scanner, but it is the floor below every other system. If the devices, the power and the network all fail at once, a printed list and a pen still get people through the door, slowly, in order. It costs a sheet of paper and it is the most reliable spare you own. We make a fuller case for this in scanning attendees when the venue wifi drops.
The spares that are really planning
Some of the best spares are not objects at all. They are decisions made in advance that mean a failure does not need a physical fix.
A device that holds the guest list locally is a spare for the network. A check-in tool that keeps working offline and syncs later means a wifi outage does not strand you, so you can carry one less worry instead of one more dongle. CheckInHub works this way on purpose — the list is on the device and check-ins sync when the connection returns — which turns a whole category of feared failure into a non-event. The best spare for a network problem is a tool that did not need the network in the first place.
The same logic applies to devices. If your check-in runs on ordinary tablets or phones rather than proprietary hardware, your spare is any nearby device with the app on it, including a steward's own phone in a genuine emergency. You are not carrying a spare for a thing only you own — you are carrying the ability to press an everyday device into service. Our note on the hardware behind a calm door covers why ordinary hardware is often the more resilient choice.
What to skip, and skip with confidence
Here is permission to leave things behind. You do not need a spare for every component, and a bag that is too heavy to carry to the right place is worse than a lighter one that is missing a non-critical item.
- Skip the second printer unless badges are genuinely load-bearing for your event.
- Skip the elaborate cable organiser; a labelled freezer bag does the job.
- Skip duplicates of anything the venue reliably provides — confirm first, then leave it.
- Skip the spare for a device you can replace from the room in seconds.
Pack the kit the same way every time
Whatever you decide carries, pack it identically for every event, so a tired steward can find the spare cable in the dark without thinking. A consistent kit is a faster kit. Our note on building a front-of-house kit list covers how to keep the whole bag organised so the spares are actually reachable when you need them.
A good spares kit is mostly empty space and a few items chosen because their absence would stop the door. Everything else is weight you carry to feel prepared rather than to be prepared. Pack the short, ruthless list, trust the tools that fail gracefully, and leave the flight case at home.
