The most common and most likely answer to this crossword clue is the 9 letter word ESOTERICA
I've seen this crossword clue in Financial Times
E
S
O
T
E
R
I
C
A
More clues leading to the result ESOTERICA
- Categorise works evading understanding, ultimately as such
- Specialized publications I create so cryptically
- Heather collects a couple of notes for obscure topics
- Trio cease perversely making things obscure
- I see actor throwing out collection of arcane items
- Assorted secret items and objects, primarily?
- I create when intoxicated, penning very obscure stuff
- Finally, unreliable alcoholic girl reveals secrets to a few
- Highly specialised publications in German removed from various categories
- Obscure ideas as coterie designed
Buddy explains!
The straight part
We know that "collection of arcane items" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case collection of arcane items = esoterica.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.
What does ESOTERICA mean?
ESOTERICA noun- Things that are esoteric; things that are impractical or specialised.