A chillum is a straight glass tube with a bowl on one end and a mouthpiece on the other — no carb hole, no curved stem, no chamber. The simplest possible smoking pipe format, sized to hold a single small pull of flower per load. A spoon pipe has a rounded bowl on one end, a curved stem, and a side-mounted carb hole that lets you clear the chamber for the last hit of a pack. Chillums (often called one-hitters or tasters) are the most discreet and pocket-friendly format, ideal for solo micro-dosing, travel, or situations where a full pack is more than you need. Spoon pipes hold a larger bowl pack, deliver smoother hits because of the chamber cooling that happens between bowl and mouthpiece, and are the more common everyday pipe for users who want flexibility. The glass-pipes collection stocks both formats plus steamrollers, sherlocks, and bubbler pipes. For pocket use, choose a chillum in the 3 to 4 inch range. For everyday sessions, choose a spoon pipe in the 4 to 5 inch range with thick borosilicate walls.