A spoon pipe is a style of pipe forsmoking herbs, tobacco, and cannabis. They are appropriately named for their basic spoon shape and size and are mostly made with blown glass today, but can also be made with other materials. Most people prefer using a spoon pipe because it's convenient.
A carb cap is a lid for your quartz banger or dab nail. Carb is short for carburetor, and like the one you would find in a car, it helps control airflow and pressure within a space.