These little pieces appear to be made of plaster.  The buildings are approximately 2 1/8 " tall and the standing elves are approximately 1 1/4" tall. I don't know when these were sold or if they are still on the market... These pieces are individually packaged on cards for hanging.   

Accessories I've found include: 2409-01 Elf carrying buckets; 2409-06 Elf with sled; 2409-072 Elves with snowman; 2409-08 Elf with Merry Christmas Sign; 2409-092 Elves with ladder; 2408-95 Elf with saw; and 2408-96 Elf carrying gift.

You can find the two buildings for sale on my other website: http://home.earthlink.net/~elfannex.