IKEA Effect
I will add a related effect - the "find" effect. I have been remarkably attached to furniture I have picked up off the side of the road or bought at some cheap second-hand store for next to nothing. The thill of finding something valuable for almost zero makes the item worth far more to me than its intrinsic value.<p>The more upmarket version of this is buying antique (or vintage) furniture at auction. The hunt to find the "perfect" piece makes the attachment so much stronger when you actually get it.