Plastic bottles, such as ones for vinegar, laundry and cleaning supplies take up a bunch of space in the trash. There really isn’t a good way to crush them, unless you cut them into small pieces. That takes forever.
So what can you do with them?
Jugs like these are another candidate for repurposing (read about repurposing Parmesan cheese canisters). They make great dinghy bailers:
If the bottle has held soap or something else you don’t want all over, be sure to rinse it out before cutting off the bottom.
Depending on how thick the plastic is, you can cut it with good kitchen shears (my usual tactic), use a serrated knife (not good for the knife, though, so don’t use your good one), or cut it with a hacksaw (Dave’s technique).
So that you don’t lose it out of the dinghy, use about 4 feet of 1/8″ cord and tie one end around the handle and the other to something in the dinghy.
Okay, so you probably can’t use all your empty jugs this way . . . but it’s at least one less in the trash!