Hard way (also known as the way I did it):
Other supplies: pliers (depending on your table legs), drill, 5/16" ceramic bit, wood saw (optional to trim down table legs), hacksaw
Next, clean any dust and dirt off the plates and table legs and spraypaint them all white. Do several light coats of paint.
Then, working on one plate at a time, paint a thin layer of Mod Podge onto the bottoms of the plates. That will help hold the fabric in place as you brush more Mod Podge on top of the fabric to permanently hold it down. I found it easiest to 1. Brush Mod Podge on the fabric around the bottom of the plate 2. Mod Podge the sides 3. Add any pleats if necessary to keep the fabric from wrinkling 4. Trim off any excess fabric.
When the bottoms of the plates have dried, flip them over and do the same process on top. For the top two plates 1. Brush the plate with Mod Podge first then place the fabric on top 2. Brush Mod Podge on top of the bottom of the plate 3. Work your way up the sides 4. Trim any excess fabric.
For the bottom plate 1. Brush the bottom of the plate with Mod Podge 2. Position strips of fabric touching but not overlapping 3. Brush on a heavy coat of Mod Podge so you don't disturb the edges of the fabric and cause them to fray 4. Use an x-acto to trim excess fabric.
Adding the border to all 3 plates was done the same way just with different widths of fabric. 1. Use a brush to put a line of Mod Podge around the edge of the plate. 2. Attach the fabric. You can choose to fold under the edges or leave the raw edges. I tried both and both ways worked. 3. Mod Podge around the edge of the plate in sections, adding pleats as you go to allow the fabric to lay flat. 4. Cover the edges of the border and inside the pleats with several coats of Mod Podge, allowing it to dry between layers.
Once all your Mod Podge has dried 1. Use white Puffy Paint to add a circle of little white dots just inside the fabric border of each plate and let that dry. 2. Cut the inside of rubber washer so it fits around the T nut. 3. Use an x-acto knife to cut an X over the hole you drilled in the top and bottom layers of the fabric on each plate then put the all thread through the bottom plate and screw the bolt onto the bottom side of the plate Then (not pictured) affix the rubber feet to the bottom of the plate. If necessary, stack up two rubber feet to raise the plate high enough that the bolt isn't touching the table top. 4. Stack everything up to the top plate then mark the all thread 1/2" above the top of that plate. Remove it and use a hacksaw to cut it. Then stack everything back up again and screw the ball you prepared in step 2 of this segment on top. Once the ball is tightened everything should be very sturdy.
Now stand back and admire your work! The outdoor Mod Podge is wipeable and water resistant so with a thick enough layer covering the fabric this should hold up well to food serving. Both the Mod Podge and puffy paint are non-toxic.