lxicon

This plugin adds a small Button for Bitcoin donations below every post on your blog.
Simply install, change some settings and you’re ready to receive Bitcoins for your blog posts.
The QR-code is generated by google.com, as this is considered the safest option. 
The popover needs Bootstrap CSS (and jQuery) to work correctly.
Donations are made directly to your wallet, so no 3rd-party or Exchange is involved.
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Bitcoin Donate Button

Enables you to add a small Button for Bitcoin donations below every post on your blog. No exchange or 3rd-party needed.

Luiji

This widget provides a nice, optionally thumbnailed list of Zazzle products 
based on query parameters you configure it with, including the store, search 
terms and sorting mechanism. Unlike other Zazzle widgets, this one only uses 
the referral identifier that you give it, or none at all if you do not 
specify one (you know who you are — wink).
Additionally, this widget can be embedded into your posts and pages with a 
shortcode. These shortcodes look something like <code>[pizazz query=asparagus rows=8 
columns=3]</code>.
I use PCRE to parse the RSS feeds. If Pizazz does not work, make sure that PCRE 
is available in your PHP installation. It is available on most PHP servers.
Pizazz is multisite-compatible!
NOTICE: I don’t have a testing staff, and my ability to think of every 
potential problem is limited. If you have problems make sure to report them 
to me or I won’t know they exist for a long time!

Pizazz

A widget that pulls a Zazzle feed and displays products based on a query

Bitcoin Donate Button vs Pizazz