Express yourself with this Casual Fillable Large Lamp Base from Threshold?. The clear lamp base allows you to get creative by filling it with whatever materials you'd like, such as agates or buttons. With the fillable lamp base, you're in complete control of color when it comes to both the inside contents and the lampshade, but don't forget, you can keep a clean-cut look by keeping the base empty? the choice is up to you. Size: Lamp Only.