The Fan of Hammers is a sculpture made by Spencer.
History[]
When Spencer is watching a show about building houses and a worker is asked if he prefers a nail gun or a hammer, he responds that he is a fan of hammers, giving Spencer the idea to literally build a fan of hammers.
When Spencer is presenting his sculpture on the webshow in iWanna Stay With Spencer, it has a malfunction, and one of the hammers flies off and almost hits Carly in the head. The hammer becomes a permanent part of the studio deoration and can be seen stuck in the wall in various episodes. The incident is directly referenced in iChristmas.
In iSell Penny-Tees, the iCarly trio sells the Fan of Hammers, along with some other things that appeared on iCarly.