With your $10 credit, you can get lots of freebies! Pick an item that is $5 or less. Shipping will usually be between $5 and $6.
Click here, then click on the Luvocracy logo on the top of that page, then click sign me up and create an account. Then come back and click here to see my choices. These are all the lowest cost items that I found.
If you are not interested in my board, go to the main catalog and look at all the items for sale. There is no way to sort by price. To see each price you will have to click on each photo of the item.
When you find the item you want add to cart and checkout.
At checkout, check the box to use the $10 credit. You will need a credit card. They ask for a credit card to make sure you do not abuse the offer of the free $10 credit. As long as your balance is 0 at checkout you will NOT be charged.