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My favorite option for collecting food scraps for composting is a food-grade, 1 gallon bucket.
Reason #1: You can get them for free if you visit your local grocery store. Go to the bakery department and ask for empty frosting buckets. People know about this so you can always ask when the best time of day is to go so you don't miss out (likely morning).
Reason #2: Typically they're white and basic and not too much of an eye sore in the kitchen (not of concern in my home). I know many people don't want something like this sitting out on the counter so you can keep reading to find more aesthetically pleasing options below.
Reason #3: They're a great size for helping to manage the amount of scraps you're adding to your worm bin so you don't over feed your worms.
If you're wanting to buy one you can check out your local hardware store or Walmart.
This is a great option if you're wanting something aesthetically pleasing for in your kitchen!
A lower cost option but still visually appealing!
Two other great options if you're going to keep your collection bin on a counter in your kitchen!
If you're concerned about smell and leaving rotting food on your counter, this is a great option! You can store it in your freezer!
Learn more about Vermicomposting with A Guide to Vermicomposting