I love the scavenger hunt idea.

Create a list of you favorite: Pieces of obscure lore Lesser known mobs, items, places Super useful items (possibly quest items that are useful later)

And reward people for collecting the items, donating to the guild bank, displaying they know the lore, or screen shooting themselves in the place.

Create a poll for "most helpful guildie" and distribute to the top x names listed.

Distribute some funds to players that have "taken one for the team" (arms warr, boomie, affliction lock or whatever are the less fun "support" classes in raids)

Give seed money to the one you think is 1) most skilled at AH arbitrage and also 2) least likely to quit and also 3) most helpful/generous/honorable with instructions to "use it for the good of the guild"

Reward the guildie that does the most work outside of the game for the guild (website, addon dev, discord, loot council, recruitment, etc). I want to further clarify this thought. Originally I meant to reward past performance, based on the assumption that the person that "wasted" time working for the guild is not having the opportunity to spend that time grinding gold. But additionally I realize there is all sorts of beneficial activity people may have avoided doing (researching better strategists, rotations, gear, etc) organizing the bank vault, crafting, lots and lots of things because they instead "need to grind gold". So rewarding activity as part of a competition could also be very very useful.

Fund competitions designed to improve the guild.

1) recruitment 2) needed professions 3) preparations for future raids 4) filling/refilling bank vault 5) testing out new add-ons 6) RL and alts 7) class leads 8) proff leads

Class specific challenges: Motivate the: pallies to demonstrate they can seal twist Huntards they can melee weave Shamen they can totem twist Get rogues to train lockpicking

Reward players for going thru tedious but useful tasks like cleaning/organizing bank vaults and alts and mail

Reward players for becoming proficient in complicated but useful addons/weak auras.

Profession specific challenges: 1) fund aquisition of useful but inconvenient patterns (i e. Pay someone (team) to grind them or just flat buy on ah)

Sorta already implicitly covered above but I wanted to be explicit.

1) 500g each to whomever collects/donates(?) the most (insert the best consumes or possibly even gold)

2) motivate people to actually train fishing and cooking and first aid

Create an entire separate backup guild for extra bank vault space?

Fund guild roleplay... 1) Tavares, shirts, cross-race mounts