I have finally figured out how to sell items through an American supplier so it is now possible to buy items in the US and Canada. At the moment, the only purchasing option is in US Dollars but this could change if anybody in Canada wants me to set up a Canadian Dollars buying option. For that matter, if anyone wants me to set up selling in Australian Dollars or Euros, I can do that too. Feel free to send me a message and I will set it up.
To buy American goodies, when you click through to the buying function, you will need to set the shipping option to United States and the currency to US Dollars and you will then be able to see the products available in the States. So far, options include canvas wraps, prints, greetings cards, mouse mats, coasters, bookmarks, magnets, playing cards and phone and I-pad cases. As I am based in the UK, I obviously haven't had chance to purchase and vet any of the American products so I would value feedback from anyone who buys anything.
Not all of the products available in the US are available in the UK (and vice versa). For instance, none of the British supplier options that are connected to this site sell phone or tablet cases. If anybody would like something that isn't shown as a purchasing option, please get in touch. The suppliers sell a lot more through their websites than I can offer on here so there is a good chance that I can source what you are looking for away from this site.
Please do get in touch if you have any questions or suggestions.