CraftStash is always one of my ‘go to’ websites for craft stash. They have so much to choose from, including die cutting, stamping and lettering supplies. Subscribe to their newsletter to get a 20% discount from your first order (excluding machines, Copic and Tombow).
Craft Stash US
Firstly, for my US and Canada readers, here are specific links for CraftStash.us.
Craft Stash UK
For my UK readers, here is the link to Craft Stash UK. Make sure you sign up to get a 20% discount off your first order.