No room of this nature would be complete without a toadstool of some kind. My two have one of these little battery lights each and they love them. At £5 each i don't think you can go wrong and they are perfect for reading midnight stories!
Now at this point there are a couple of options for a room like this. You can go all out and paint a mural around the room of a woodland scene...with ladybirds etc... which could be cute but i think would be huge amounts of effort/or cash and could get tiresome quickly so i have focused on a more simplistic way of introducing a theme.
Walls. I'd stick to neural white or go muddy grey like Fired Earth's Malm, or maybe even a green if you can find a shade you like. Then i'd find some great prints or artwork to adorn some of the walls...maybe make a collage of prints or add in some photos to the mix as well.
Kathy Panton at Etsy
I really like the punchy red and the mismatched cushions here. I think adding a red element to a piece of furniture - paint a chair, some picture frames or add some red fabric cushions will breathe some vibrancy and life into plainer walls. I think in this case red and white dotted fabric could be great as cushions or bunting and easy to make if you can't find any pre made.
Then i'd pick a feature wall and introduce a tree or branch to bring the outdoors in. This can be done in many ways, real branches attched to walls can hang ornaments too and fabric mini animals or you can paint your own, or mosaic one out of wallpaper samples. Failing that there are lots of tree wall stickers available too.
Then i couldn't resist adding these in as Daisy loves ladybirds.
Vinyl Wall Decs at Etsy
There are lots more things that could be fabulous in a room like this but hopefully this will give you some inspiration!
I would also check out the beautiful prints at Belle and Boo that would go perfectly in this room. Seb and Kit have this one in theirs.