Suitable for a myriad of events or purposes. Use it to store liquids in for weddings, bachelor parties, Hen nights etc. The bottles are glass so you can put carbonated drinks in them (unlike traditional hip flasks). Use one for spirits, use one for a mixer. The choices are endless. I can personalise the holsters too with lettering on the horizontal strip of leather (realistically around 6-7 characters) for each bottle.
They can also be used as phys reps in LRP or LARP for potions or apothecary items.
Think how snazzy this would look sitting next to your wand on your Harry Potter cosplay outfit!