For your advent calendar you can pack your gifts in transparent plastic balls. Then you can arrange the balls in the metal ring so you will have an unique advent calendar.

Materials:
607-40 metal ring white 40cm (10 pz.), 1 pc.
360-20 ball prespex 50 mm (100 pz.), 24 pz.
3420-77 stars gold 12mm (360 pz.), ca. 120.
9743-30 sticker SB1 numbers 1-24 gold (6 pz.), 1 pc.
9400-311 chain of lights LED 8x warm light SB1 (6 packs), 1 pack
52374 Tillandsia-garland 90cm (6 pz.), 1 pc.
601-531 brass wire 0.22mm 100m (10 bags), 1 bag
fir garland
different ribbons

Tool:
Side cutters