Since I have an overly excited wife, she decided she wanted to put the tree up today (I know, its not even December yet). Took a wee pic, and thought it would be a good idea for a thread:
ASDA and Tesco have a fairly big selection of trees with fibre optic lights. We got ours from Homebase yesturday as all their trees were 50% which was nice.
I have a small tree with fibre-optics- got mine from Homebase a couple of years back..It's not up yet tho, and won't be going up for some time!! (along with a real tree too)