Most stores put their entire Christmas budget into safe volume: standard baubles, lights, the things that always sell well. This makes sense, but it's also precisely why you're competing on price with the chain down the street. Spending a small portion differently changes that.
The breakdown of your Christmas display
Keep the largest part of your budget for the volume that you'll sell anyway. But set aside a small fixed portion, say a fifth, for a few items that no one else has. That fifth does the heavy lifting: it draws people in and gives you something to talk about. The rest sells along with it.
Distinction doesn't require extra space
A few boxes of special ornaments barely take up any space, but they do determine how your display looks. A handful of eye-catchers at the front changes the impression of your entire Christmas corner, without you having to cut your volume purchases.
Calculate with the margin, not the unit price
A distinctive item doesn't need to be on sale, because the customer can't compare it to anything else. That's where your margin is. On the volume items, you compromise on price; on the distinctive items, you maintain it. So that small part of your budget often yields more profit than its share suggests.
Curious what that distinctive part costs you and what it brings in? On become a sales point you will find the purchase prices and the tier system.