Apparently swagbucks codes are possibly reset weekly on the special offer page of the Swagbucks website. Find them under the “quick link” section, click on the special offers section. Go through all the offers, no need to apply or anything, and at the end you will find a swagcode, this takes about 1 minute or so, depending on connection of the internet you are using!
Not signed up for swagbucks, use this link to sign up today. Read more about swagbucks, here from a previous blog post!