I've put this up in another forum somewhere, though I thought it would be a good idea to ask you guys here on APUG. I've been looking through strobist and other DIY lighting sites looking for snoot solutions and the likes of it, and I keep noticing all manner of light modifiers such as home made snoots and softboxes made of cardboard. The thing that bothers me while seeing this is considering the amount of heat these flashes produce. I'm trying to learn how to use a set of studio lights as well as a couple of Nikon speedlites, and am considering using the speedlites as snoots considering that's the cheapest and easiest way to modify light. So I'm curious, is there any big fire hazard as to using cardboard and similar materials next to a speedlite? And if there isn't, are the DIY solutions for bigger lights such as 500WS useable as well?