If you like to spice your game with magical artefacts, this is the book for you (PLUNDER has been around for so long and been, well, plundered of everything). So here are a good numbers of new items to include in your game.
My absolute fave is the SINGING SWORD. The item that indeed gives you + 1 CHA when you flash it around, but - 1 CHA if you stay in one place for too long. The item that's worth 10 000 L... unless the buyer knows its whole story and then it's worth 1 000 L at most. It's classy, it's hilarious and I would throw it in the Vent (Glorantha's biggest Volcano) if I ended up as its owner. Maybe. It's so beautiful, so elegant, it cuts so deeply... ah, such a hard choice.
I also recommend Stickyfinger (which does not stick) and the Bones of Luck and Death. So you want to be part of the Tournament of the same name ? Here's your chance to get a feel of the power of LUCK.
Hippoi's Feathers and Esrola's mirror are more classic but well-rounded ideas that are worth Questing for.
Finally, you get a full selection of shamanic items of power : medicine bundles, ancestor bundles, ablity bundles, plenty of bundles ; plus spirit weapons, spirit darts, etc. all brought to you by the excellent - if eccentric - Simon Phipp.
Enjoy reading and PLEASE let me know if you ever include the goddam Singing Sword in your game !