Darkness

Diamonds.

Snow, Rain

I am your sister.

Stamp

Letter C

Because if you add 4 + 9 in 4995 it gives 10 (13 is correct) and if you add 9 + 5 it gives 13 (14 is correct)

A coffin!

Age

An egg

A palm

Candle / Pencil

6
6 = 6*7 = 42
5 = 5*6 = 30
4 = 4*5 = 20
3 = 3*4 = 12
2 = 2*3 = 6