Choose the exact arrangement you will use when you want the hair contained, then pack the familiar fastener that supports it. Add the care items your own routine needs and check any travel restrictions that apply to your luggage. Each styling item should have a clear role. A tool included only because you might invent a new look while away is less useful than a spare of the one item your tested routine relies on.
Try the packed method at home using only the items you intend to bring. You may discover that an accessory needs more preparation than expected, or that your usual simple arrangement already does the job. If you want an evening detail, pick something that can change the look without creating another large kit. A small ornament, different part or visible earring can help the same base feel distinct beside a new outfit, while keeping the practical method familiar.