Nativity Scene Vinyl Lettering - fits perfect on 8x8 inch KraftyBlok or glass block and two 4x8 inch blocks. $11.00, via Etsy.
Glass block craft idea - 1 glass block - 1 vinyl saying - 1 strand white lights - 1 large flower - Filler (shred, tulle, etc)
Bottle with twinkle lights inside and glass stones glued to the outside
Take a glass block, put picture on the back, put vinyl letters on the front for a nice 3D effect