As a mom of five little ones (the oldest being 10 and not technically little, but he will always be my little baby whether he likes it or not) I feel somewhat qualified to share what I have learned in Surviving Toddlerhood. Rest assured, this advice is not meant to replace advice from professionals who went to big fancy schools to learn about toddlers.
Never throw away random pieces/parts you find around you home. Those pieces/parts belong to something important and you will most assuredly need them in the future. Your toddler will never tell you where these things came from but it’s a safe bet to say they are responsible for the relocation. It is in your best interest to set aside a drawer or basket for these things.