The most common and most likely answer to this crossword clue is the 8 letter word MOUSEPAD
I've seen this crossword clue in The Daily Telegraph
M
O
U
S
E
P
A
D
Buddy explains!

The straight part
We know that "A bit of office equipment" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a bit of office equipment = mousepad.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 MOUSEPAD mean?
MOUSEPAD noun- A pad, with an enhanced surface to assist the operation of a display pointer.