Best way would be like anything else, get a vape pipe, like the kind used for smoking meth (call it a chicken bone, glass dick, whatever). Next best would be light bulb, then foil. Real meth freaks can blow these pipes with blow torch and glass tubing, otherwise check local headshops, you can easily tell the difference between a regular bowl and one meant for vape (google it if u must).
It's easy, you just add the chem on top for foil, or inside for vape pipe or light bulb, then apply heat from the bottom via lighter, alcohol burner, or when desperate candle/oil lamp. When it starts to smoke suck it with a straw (or if using vape pipe from stem). I'm not gonna tell you how to prepare a light bulb, but you should be able to figure it out. There is a WHOLE technique to each method and there is some practice involved before you get good at it. If you know any former meth heads ask them and they can teach you a lot.
FYI smoking amphetamines quickly leads down a bad path toward addiction. Believe me, I know. Everyone says oh not me, but eventually everyone gets bitten in the ass by it.
Also, you said you don't want to melt it. It will necessarily melt before it begins to smoke. This is known as sublimation (or phase transition). It goes solid>liquid>gas according to the temp and atmospheric pressure.
Cheers,
-SimStim