I love Digi Stamp Boutique and have many of their images. NitWit Collections also has a large range of digital products including digital images, designer papers, calendars, gift tags etc. Not sure if I am allowed to include links but if you just type the names into your favourite search engine, you should be able to find them easily.
Digi Stamp Boutique is based in the UK - and Nitwit Collections is based in the USA. Hope this helps