1st pic is the wiper control module, held together by the stock fiberglass reinforced tape. If the tape fails, the board falls out and may short on whatever is back there. Make sure it's tight, us a zip tie.
2 = aftermarket, an alarm maybe?
3 =part of the theft system, it's the clip that holds the door lock. The plunger (rubber tip) is depressed, when someon pops the lock it will extend and trigger the horn
4 = interior light dimmer/timer
5 = radio related, speaker, power, antenna relay..yadda yadda
6 = not 100% sure, probably came out the fuse box and goes to the key buzzr