If I got one of these cards my day would certainly be brightened. What a cheery little crew of friends! Thanks anonymous future friend for sending me a note!
Available from: Sharif http://www.etsy.com/listing/39809663/i-heart-you-24x7
These cute little sticky notes sell for $3.50 at Nothing Elegant.
I'd prefer to write a note on a real leaf with a sharp stick, but that's just me.
Available at: Nut and Bee http://www.etsy.com/listing/60241234/mini-notes-sweet-sweet-pea ($3.50)
http://www.chicki.co.uk/ - 1.75pounds