Hello Nicole,
A nice haul you have there!
#5, The small star shaped device is a rank pip for a shoulder board.
#7 & 8 Is a WW I Eisernes Kreuz 2. Klasse .
#15 & 16 Is a medal bar having a WW I Eisernes Kreuz 2. Klasse and a WW I Ehrenkreuz für Frontkämpfer 1914-1918
# 23 & 24 Is a Kriegsverdienstmedaille
# 25 Is a WW I cut out Verwundetenabzeichen in Schwarz.
# 26 Is a Deutsches Feld-Ehrenzeichen.
# 27 Is a Eisernes Kreuz 1. Klasse
# 28 Is another WW I cut out Verwundetenabzeichen in Schwarz.
# 29 Is a WWI normal Verwundetenabzeichen in Schwarz.
That is about all of the ones I can help with.
Ralph.