The most common and most likely answer to this crossword clue is the 5 plus 4 plus 3 letter word THREE WISE MEN
I've seen this crossword clue in The Guardian
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More clues leading to the result THREE WISE MEN
- People with XY chromosomes after YYY said visitors from the east
- They brought gifts, new items, here, for exchange
- Bringers of gifts, wines, met here after arrangement
- They provided new items here and original Christmas gifts
- and 14 Across and 29 Down: Bearers of gifts when tree is arranged, including me
- They gave original Christmas presents
- Trio with stable bearings
Buddy explains!

The straight part
We know that "They provided new items here and original Christmas gifts" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case they provided new items here and original christmas gifts = three wise men.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.