Who's good at identifying those mystery parts that just fall off?

The car? My father's '93 E320 coupe (W124 with M104).
First part? 601 202 05 22. Small, circular, black plastic disc. Believed to have come from the engine bay.
Second part? 124 899 00 14. Humpy shaped, black plastic. Found loose in boot (sorry, trunk).

Any ideas?

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107.023: 350SLC, 3-speed auto, icon gold, parchment MBtex (sold 2012 after 29 years ownership).
107.026: 500SLC, 4-speed auto, thistle green, green velour.
124.090: 300TE, 4-speed auto, arctic white, cream-beige MBtex.
201.028: 190E 2.3 Sportline, 5-speed manual, arctic white, blue leather.
201.028: 190E 2.3, 4-speed auto, blue-black, grey MBtex.
201.034: 190E 2.3-16, 5-speed manual, blue-black, black leather.