Need suggest for wled strip

I have added LED on back of monitor which looks good but I have some spare LED left over.

I was wondering if I should put the LED under my desk. Should I put it on back of the desk and sides or front and sides? Or any other suggestions?

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I setup LED on bottom of the desk but they don't seem to sync well.
How would I do the LED setup? I have led strip running from all the left side to all front and all right side.