A few years ago, I happened to run across a photo similar to the one I've posted above, of an outdoor suspended table. It is super simple to assemble and a really cool concept for this feast of the Lord. I have actually tried this project out, so I tell you from experience this will not be a tough task to undertake.
First find yourself a tabletop. Our first year implementing our table we used an old closet door, which gave it a little bit of extra detail that I was looking for in our sukkah. All you need to do is drill four holes near the four corners of your tabletop, knot the rope on the bottom side of the table, secure to the top of your sukkah, and voila! Instant table. We added extra decorations to the table, adorning ours with Scripture verses and mirrors for an artsy effect, but you can personalize your table however the Ruach HaKodesh/Holy Spirit leads! It's really fun to have the chance to put your own personal touch into this project.
I pray your upcoming high holy days are a time of complete devotion to our King of Kings. He tabernacled with us; the majesty of the heavens came down to earth to dwell here and commune with us. What incredible intimacy our Creator desires; many blessings to you all...be strengthened and keep your eyes focused above!