I find the golden colored, metal snorting pipes from a full snorting-kit the perfect pipes for snorting. They are about 6 to 7 cm's in length, they have a small tube but it get's wider on the side where you hold it over the stuff you are going to snort, and at the other end it's nice and small to go easily in your nose (not too deep) without any discomfort.
It also depends on what kind of quality you are snorting. This sticky and/or oily, wet low quality Coke for example is not able to be chopped up into a nice, totally fine powder as you can do with high quality, straight from the brick solid rock Cocaine, which is dry and powders up nicely into almost dust.
Whit this fine powder, never snort too hard or it will get into your lungs, just inhale it like you're breathing. If you have this lower quality Coke, you will need a larger, bigger sniffing tube. Just roll it from a piece of paper, but not too wide at the bottom because this will make a lot of air go into the tube once you start snorting making it difficult to get a good amount of your Coke up your nose.
Also, never use money to snort with, you can in effect get ANY disease POSSIBLE from snorting with money and all it takes is a bit of nose damage (which will occur sooner or later if you snort a lot - or even when you do not snort that much) and some bad luck... Money is really nasty to use for snorting, it's really like sharing a syringe but with not as big a chance of getting a disease; but the chance is still pretty high! Also never share sniffing tubes...
The best pieces of paper for rolling a sniffing tube are this post-it looking kind of papers but without a sticky side. They have the perfect size IMO to snort with! But a sniff-kit has it all, a crusher, a spoon, a mirror, a sniff tube, a razor blade, a bullet and a nice wallet with compartments for each, very handy! And nobody would think it's anything else than a handy wallet! I would get one of those if I where you, I never snort without having one anymore (you do need to buy a new one now and then, to keep everything neath and clean, washing your sniff-kit stuff will have less and less effect as time goes by...), plus it's a nice paraphernalia to own!
And you have many different ones! If you are a snort-fanatic it's a must IMO to have one!
Cheers!