Bonsai Mirai has a really neat Engelmann Spruce on the their website. It looks like the tree is planted in some type of deadwood, I am assuming its juniper deadwood. I like this a lot the deadwood looks like its really part of the tree. I also like the accent plants or as Ryan Neil says some “grass” planted on the pot.

By the way, the tree is for sale and you can buy it here:  Engelmann Spruce.