For the UK Wargamers in this community, 'The Works' discount stores have started to stock some of their Christmas ranges - including packs of snow-covered twisted wire Christmas trees (about 5cm tall).
For £2 you get 8 trees, which is pretty good value. If you remove them from their wooden bases, they are okay (if basic) 'as is' - but if like me, you have some suitable dark green spray paint (to cover up the snow effect), some diluted white glue and a supply of terrain scatter grass/foliage - you can turn them into some very nice pine woods for your table - have a look at the pictures