My advent calendar consists of 24 little houses made out of paper. They can be easily folded flat for storage. Could be an easy way to create an elaborate Christmas village that is easy to store but looks fantastic and festive.
DIY Hama or Perler Bead Ornaments. Top Photo: Heart Ornaments from Craft and Creativity here. Bottom Photo: Snowflake Ornaments from heodeza here (plus a link to snowflake templates). Perler Beads are.