For example, Dragon's Blood has 12 uses (Albus Dumbledore found all of them).
Phoenix Tail Feather, Unicorn Tail Hair, Dragon Heartstring, Veela Hair, Rougarou Hair, Thestral Tail Hair, etc... are used for wand cores.
Phoenix tears have magical healing properties.
Do wizard and witches body parts have some magical properties too? Since they're magical?