What You Need
2 Frosta stools
1 ¾" Thick Clear Polished Glass in 16½" diameter
Organic Paint (I used Farrow & Ball)
1 Thick Round Disc of Wool Felt
This is a really easy project. The only real hurdle is measuring correctly and shelling out for the glass (which I think is worth it).
First, you order your glass from a local glass shop. I wanted a wider bedside table than the stool allowed, so I went out on all sides to 16½". It's a funky look, but I like it. I also ordered really thick glass (¾") which is much more costly. You could easily cut the price down by using thinner glass.
Second, you cut down only three of the four legs provided for each of the low stools. I wanted the space to appear divided in half, so I cut the legs roughly at 8", since the seat is 17½" tall.
Third, you need to site the three legs tripod style. Since IKEA gives you holes for four legs, I used one of the pre-drilled holes and then divided the rest of the circle into thirds. I didn't use complicated math. I simply stretched the tape around the circumfrence of the seat and divided by three.
When attaching the legs, I always use a little Gorilla glue to make sure that the legs are really strong. IKEA screws alone rarely do the job and it can be wobbly.
When you have attached all the legs and can place the lower stool inside of the high stool, place tape around the edges of the high stool and give the top a nice two coats of paint. I used a blue-grey tester can from Farrow & Ball because I wanted to try the paint, I was painting in our kitchen and doors and because the testers are cheap.
Finally, when the paint is dry, you place 3-4 small rubber glides under the glass on top of your painted stool and install (I also added a piece of thick felt ordered from Sutherland Felt). I arranged the stools so that you could get books easily in the front but you can try other variations. The tripod legs are fun to play with.