I know this is not an advertised service from PayPal, but if you do have an account with them it's very easy to create First Class shipping labels.
Printing a Priority Stamp at home is no problem with USPS but you can't print a first class through the website. However, if you have a PayPal account it's actually quite easy.
There are times when I send out thank you gifts or personal mail, so of course there is no recent payment that generates the ability to print a label through PayPal (my preferred method of receiving payment). But PayPal actually does have the service available, however hard to find the link on your own:)
Just follow this link, sign in to your PayPal account and you're ready to go!
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