Do you have kids or grandkids that are worried how santa will come to visit because you don't have a chimney. Try giving them this for comfort
This tag has a string to hang on the tree, or simply leave it wherever they feel santa can retrieve it from. 
Made from wood, engraved, and a gold key attached. (Gold key varies)
Size (not counting string) 2.5" height x 0.25" wide x 1 5/8" wide