The belt looks like a serpentine belt from your engine. It would drive your alternator, power steering pump, etc. The bat with the sticker with "A2...." looks like the tool used in installing the belt, to move the spring-loaded tensioning pulley so you can get the serpentine belt on the pulleys. The other parts look like they might go to a spare tire hanger of some sort. Not sure about them.
-Joe
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