Plain frame (silver) or paint silver.
paint pens (baker ross/ hobbycraft or yellow moon)
wipe away window markers or window crayons to write the amount of days! (mine are crayola)
What to do....
1. Cover glass with paper, paint frame, I painted lots of christmas trees, snow flakes and characters
2. when dried uncover and write 'days till xmas' or even 'sleeps to santa' on the glass with paint pens
3. when all dried insert plain coloured paper into the back of the frame, for your background, I used very pale blue.