“Features: Standard CR2032 Battery (Clip in); 5mm LED; Easy Solder; Ideal light source for your projects; Optional Switch; Text for lead identification of LED. Hats: Hats can be placed on top of the tea light with a push fit, here are some suggestions: Candle TeaLiight Hat: http://www.thingiverse.com/thing:1188098 ; Christmas Tree Hat: http://www.thingiverse.com/thing:193814 (Diameter: 42; Height: 14.65; LED Holder Outer Diameter: 9.8); Snowman Hat: http://www.thingiverse.com/thing:1188099 . Parts: Battery Holder: https://solarbotics.com/product/bhold2032/ or http://www.digikey.com/product-detail/en/BS-7/BS-7-ND/389447 . LED: Any 5mm LED that has a 3 Volt forward voltage or less will do, here are some animated suggestions: https://www.sparkfun.com/products/11450 (slow color cycle); https://www.adafruit.com/products/679 (slow color cycle); http://shop.evilmadscientist.com/productsmenu/partsmenu/353 (candle flicker). Switch (Optional): The battery holder can be used as a switch by using the built in clip, but if a switch is desired: http://www.digikey.com/product-search/en?keywords=CKN10397”