My friend comes over to my place. In the kitchen he spots our blue plastic clock with the hook at the top. "Hey I also have the same clock! But it's pink!" (his sister had bought it.)

Then in the living room he mentions he has he the same reading chair - except that the legs are of a different design.

It's fun attempting to identify Ikea furniture while visiting someone else's place. And then you try to pick out which piece(s) of furniture both of you happen to have purchased from Ikea. Sometimes when I go to Ikea and I see a particularly familiar piece of furniture, I'd say, "Oh! So-and-so has this too!"