Picture 1 - Both Johnston and Stones, last type before $12 coin. Issued 1983, consecutive numbers, AU or UNC, maybe $5 the pair
Picture 2 - A $5 and $10 both worn - sadly we can't tell which signature as you have the reverses only. Australia on them means that they are 1974 or later.
Picture 3 - The 4 $2 notes, 3 are common Johnston/Stones of 1983 - 85 and worth FV. However second note is a Phillips Randall Cof A note from 1968. It would be VG/Fine and yet still worth a few $ in even that condition, McDonald (2008) has a fine condition example listed at $10, however these are SELLING prices.
Picture 4 - Two worn and 1983 Johnston/Stone $1 notes - typical hoarding when the $1 coin came out.
None of the serial numbers are significant.
Loving Halfcrowns. British and Commonwealth coins 1750 - 1950 and anything Kiwi.
If it's round, shiny and silvery I will love it.