DIY: 17 Creative Ideas With Light Bulb (I don't know about the fish idea, but the rest of these look pretty cool. Who buys these light-bulbs anymore? I thought they stopped making these?
upcycled light bulb vases can be made from your old bulbs while replacing them with new eco lights.
Little bird light display home decor stocking stuffer
DIY decoration from bulbs – 120 craft ideas for old light bulbs
Light Bulb Snow Globe - instructables uses an LED candle for the base.