can, but a can is really a tube that just walled on each side. There were others. Tortinos were a triangular tube filled with uniform triangular chips. The best thing about these tubes of crunchy salty goodness is that you can get a bunch of chips in a small space. It's like what would happen if Ikea started making potato chips.
Nutella - No, it's in a Jar. It should be in a tube. It's so frustrating trying to get that last bit of chocolately goodness out of the jar. The best answer it to eat a serving of ice cream with the jar to get the last bit out. Needs to be in a tube, but it's so good that you'd probably want to open the tube to get even that last bit. Peanut butter fits in this category as well, but probably not the kind that separates, that would be kind of yuck. In fact this entire blog entry was inspired by this one entry. Please makers of Nutella. Put it in a tube. It would be much better that way.
3. Coins - I used to run a honor candy store. I loved it. It was great to know what kind of candy people liked and what factors would change those tastes (cold weather = Chocolate). When I would get done at the end of the week, I would wrap up tubes of coins. The funny thing is these paper tubes of coins would invariably be opened up by the institution I was trying to spend them at. It appears that a tube of coins are not to be trusted. That's why you see tubes of coins wrapped in see through plastic now. But it's still a tube and that's all that is important for now.
For a short period of time things that were thought of as cool of neat were called tubular. I don't know why, but I know why it was short lived, because it was pretty much a stupid turn of phrase. See you in 15 days or so. I hope.