bubinga pot...looking for soundboard ideas

[Teebugg]

Im putting together a bubinga 3.5" pot, glass playing surface. Wondering what your thoughts on a sounboard would be? Ive thrown around the idea of slate, glass or possibly zebra wood. Any ideas?

[Gooserbat]

I had a Bubinga Lights Out that had a yellowheart and it looked Prety good.