Finding the best Mac App Bundles has always been a challenge. With more than 7 years of experience, we are able to find the best deals for you – regarding software, apps, bundles, assets and so on. We make sure to find offers which lets you buy the apps cheaper or get the software even for free. The Tor Browser Bundle lets you use Tor on Windows, Mac OS X, or Linux without needing to install any software. It can run off a USB flash drive, comes with a pre-configured web browser called Aurora, and is.

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A little birdie left a comment saying there was an unofficial Tor Browser Bundle for Tiger and Leopard at sourceforge.net/projects/osxpowerpcpackages. Given that I wrote a long torturous post about how to use Tor without the bundle since Tor officially dropped PowerPC, I naturally wanted to check this out.
So I downloaded it and it turns out it's no joke. It really is the Tor Browser Bundle for PowerPC. From the ReadMe:

The packages in this directory are UNOFFICIAL builds of the Tor Browser Bundle for Mac OS X Tiger (10.4) and Leopard (10.5), PowerPC architecture. Optimized builds are available for the different PowerPC versions, namely, the G3, G4 (7450) and G5.
The bundle is based on the official Tor Browser Bundle with changes to make it work on older Mac OS X versions and the PowerPC architecture. Most notably, Qt is downgraded to the last Mac OS X 10.4 compatible version (4.7.4) and Firefox is patched with suitable parts from the TenFourFox changeset.
Note that the 2.3.25-15 bundle version is already outdated. More current version based on Tor Browser Bundle 3.5 is in the works.

As said, it's a bit outdated so it's more proof of concept, but everything works. It all comes in one app bundle, and inside it are Vidalia and Firefox, with Firefox having its own profile in TorBrowser.app/Library/Application Support/, so you can run this side-by-side with TenFourFox with no problems.
It also sets your user agent to the default Tor user agent, has private browsing enabled, and sets network.proxy.socks_remote_dns to 'true,' so all your bases are covered. It comes with two add-ons, HTTPS Everywhere and NoScript. NoScript is set to allow scripts by default, so you want to click the 'Forbid Scripts' option.
Basically all you need to do is start the application, watch Vidalia establish a connection until Firefox opens to a page announcing you're browsing anonymously. Easy like it's supposed to be.

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I'm also intrigued by the account name on that Sourceforge page. It's called 'OS X PowerPC Packages' with the description, 'A repository providing binaries of open source packages built for OS X Tiger (10.4) and Leopard (10.5) PowerPC.' So maybe there'll be more in the future.