There are many ways to collect pollen and resin, but none are as effective as bubble bags for ice water extraction. They are affordable, simple to use, and reusable. With a bit of manual labor, you can easily collect all the resin or pollen you need. Bubble bags solve many common extraction problems: they don't require special tools like presses or heaters and are reusable. There are also bubble bags that are color-coded according to their sizes which is convenient if you're looking for specific-sized bags.