Small bowl tamper for standard Bic lighters

thingiverse

The little metal tab at the bottom of a standard-sized Bic lighter clicks into place with a satisfying snap. However, be aware that it can get stuck from time to time, so you might need to make it slightly larger by adjusting it upwards by one percent. To do this, simply push the tab in and then pull it out again while holding the lighter steady. This should give it enough room to move freely without any issues.