It depends what you're snorting and how much, too. Plugging/rectal administration is a safer and more effective alternative to snorting even though it's less socially acceptable. All you need is a dish to crush your pills in, something to crush them with (spoon), an oral syringe, a card to funnel the pills into the syringe (backload), and some water.
If the stuff you're snorting has lots of destructive cuts or is highly acidic (street cocaine and large doses of ketamine are the two major offenders) then it's best if you switch routes of administration or stop using if possible. I've read that ketamine mixed 1:1 by weight with sodium bicarbonate, administered rectally in a water solution is equally effective or more effective than snorted ketamine and less destructive to tissue, too.
If you snort amphetamines, cathinones, MDMA/analogues, stuff like ethylphenidate or methylphenidate, any of the 2Cs, tryptamines, etc - those are all good candidates for plugging. Doing them that way means you use up to 50% less drug than nasal usage too. Otherwise, take them orally, perhaps with some bicarbonate (baking soda) or calcium carbonate (Tums/Rolaids/antacids).