MiniCart will implement a mini-shopping-cart. The users will be able to buy one item at a time. You can embed the items into posts.
This plugin adds a PayPal donation button to posts and/or theme.
WordPress PayPal Donations Plugin is exactly what the name suggests: it offers users the ability do donate and optionally buy a link. Related Links:
The “Related Ways to Take Action” WordPress Plugin makes it super easy to connect your readers to ways to take action based on the content of your
Adds PayPal Donation Button For The Childs Play Charity
EasyDonation allows WordPress users to easily embed a PayPal donation button with one tag.