T&M do a range of annuals called Fairy Mixture. They also do some annual poppies called Fairy Wings. I think that Fairy Mix includes some Fairy Wings.
I often grow some Fairy mix and it is very successful. It looks pretty, but, more importantly is successful in attracting fairies (enlarge the photo if it's not clear enough)...
You also need to ensure that you have some old logs and long grass, to enable the fairies and their attendant animals to build their homes...