Stampin' Up! patterned paper makes great envelopes. I have used the scalloped envelop die to make envelopes with the Haiku paper, so quick and easy.
The stamp set i have used is a Level 1 Hostess Set, Organic Grace.I just stamped straight onto glossy white card stock.
Don't forget Haiku patterned paper is only $10.17 until next Tuesday !