After several episodes of front brake work and front-end alignment (all DIY), I found these items under or near the front of the car. They appeared at different times, and after some examination underneath and under the hood, I have no idea where they came from. Anyone able to clue me in? Thanks.

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7