I have found some free adult colouring pages with flowers etc. At http://www.cooloringpages.com/adult-coloring-pages-flowers.html this includes birds and fairies, so hopefully they are okay too.
There is also one at http://www.colorpagesformom.com/coloringpages/flowers/ this seems to be small bunches or flowers and flower patterns.
I find colouring so relaxing, it's something that can be done whilst listening to soft music. It's an easy way to let go of your troubles and just have some 'me' time.
It's great that these sites provide colouring pages for adults, as it's not just kids who like to let the crayons run wild! It's very satisfying to finish a picture and be able to say "I did that".
I hope this is what you are looking for, there are others too, so hopefully you won't get bored on rainy (and snowy) days to come. I was surprised to see how many different categories there are too, so if you tire of flowers, there's always Disney!