How can I jazz up glass tiles in my kitchen?

I have a single row of glass tiles the length of my counter top. There's a window in the middle with cupboards on either side. Is there anything i can do to jazz them up without having to take them out. I have cupboards on either side of the sink which could use another couple of rows of something to bring the level up to the cupboards. This would be going above the glass row already there. Any ideas?


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