I really like crocheting little light bulbs, but prefer the socket region to be more realistic. I like the stitches to be tighter. These are the Christmas Little Flickers Light Bulb Strand pattern. 
 
I had a mixed bundle box that Repeat Crafter Me put together a couple of years ago, and the colours in it were amazing. 
 
Red Heart Super Saver. 198 g/7 oz, 333 meters/364 yards
A - Shocking Pink
B - Spring Green
C - Turqua
D - Saffron
E - Pumpkin
F - Great Heather (to look burnt out as a conversation bulb)
 
Caron One Pound. 453.6 g/16 oz, 742 meters/812 yards
G - Kelly Green (socket and strand)
 
Polyfil to stuff the light.
 
Hook: 4.5 mm / US 7
 
Gauge: 14 sc and 16 rows = 4” [10 cm]
 
Size: 5” long x 1.5” diameter
 
Note: If you would like these to be bigger, increase your hook size to 5 mm / H/8 or 5.5 mm / I/9.