Please do not do this. Just don't do it. Watch this video, "After the Rainbow", and then don't do it. This one experiment has been the cause of most maiming and damage in teaching labs over the past decade or so, so maybe people just shouldn't do it. What you need is a Bunsen Burner and some wooden craft sticks. Soak the sticks in distilled water overnight, maybe change it once or twice, to remove any residual sodium. Light the Bunsen, pick up a bit of a metal salt with one of the sticks, and put it into the Bunsen flame - voila, you will see colors for certain elements. Copper, potassium, calcium, lithium, strontium, and yes even boron give neat colors. Sodium will give the typical yellow you think of as a 'normal' flame color, because most things people burn tend to contain at least some sodium and it emits strongly enough to drown out other things. Bunsen actually developed his burner, with a hot colorless flame, for the exact purpose of doing flame tests. It works very well.

The experiment is yes less dangerous with other flammable liquids than methanol. People like to use methanol because it gives nice bright colors and by itself has an invisible flame. This is part of the danger! You can't even see burning methanol, you'll first notice it on you when your skin starts bubbling and smelling like BBQ. Please don't do it with methanol, but ideally, don't do this with any flammable liquid.

I totally know where to 'obtain methanol' but I won't tell you. Sorry for being a dick about it, but yeah this is the one lab I'm never going to do.

Well, the second lab I will never do: I frequently have gotten student requests for "Diet Coke and Mentos". I ask them - do you really need ME for that? Is there any reason you can't just do that on your own?