Cracked another bulb vaping?

I'm a freaking stupid ass. I cracked my second lightbulb vaping . I'm putting the damn things just too close to the flame. First I used a 60W bulb. After that cracked, I made another one using one of those 3-way bulbs. I liked the smaller size of the first one, but I thought the bigger one would be tougher. Not! Besides not holding them directly in the flame (stupid) , does anyone know what size bulb should I try that might not crack so easy? It's only a small crack, but damn! I'm gonna order a vapolution. But vaperizers are all so expensive and I'm in no big hurry to drop the bucks right now. But vaping is a cool, stealthy, healthy, heady way to get high and I like it a lot. Doing a joint or bowl will always be fun though. When you vape though, you actually get high without even seeing much of anything as far as smoke. But you taste it. One reason I liked the smaller bulb was you could see the white vaper better.