Hello, I'm somewhat stuck on a dungeon I'm designing for my group.

I’m currently running a mini-campaign, where my group is chasing a djinn/demon that’s wreaking havoc upon the land by granting and twisting people’s desire to make them reality. My group has been chasing the being for quite some time now and are close to confronting it in its lair.
As the theme for the game is wishes/desire, I decided to have the final dungeon based around the 7 Deadly Sin as they each represent one of humanity's strongest desires.
The basic ideas is, that they have to make their way through several rooms, each guarded by a servant of the being and each representing one of the sins.
So far I have:

Wrath: The group is trapped inside an arena and attacked by wave after wave of monsters. The trick here is to remain calm. Do not give in to your anger/hatred and remain calm. Do not fight back and the path will open in front of you.

Greed: You are trapped inside a room. You have to give up one of your possessions to keep moving forward.

Envy: The group is faced with a rival group they previously met during the adventure they overshadowed with their deeds. The group envies their success and has sworn to get rid of them.

Sloth: A trap made to look like a trap room. It’s designed to make it look like several people died here and there are several warnings to the players. The trick here is there actually is no threat to them. The room is merely designed to keep them inside as long as possible. For each minute they stay inside the room, they become infected by some unseen spores in the air. The more time they waste inside the room, the farther the infection spreads and the more damage they take upon leaving the room.

Lust: ????

Gluttony: The find a woman endless gorging herself on a never ending banquet. The group has to find a way to satisfy her hunger.

Pride: It’s Opposite Day. The group will find that each of their skills they pride themselves on and have spent so much time honing, have become completely useless. Here the group has to rely on their worst skills to move forward. Instead of the barbarian, the wizard has to do the heavy lifting. Instead of the rogue, the barbarian has to do the lock picking. And instead of the bard, the fighter  has to do the sweet talk. 

I honestly have a pretty good idea what to do, except for Lust. Kinda stuck on what to do for that one, so I was wondering if maybe one of you had some idea what best to do for that room? I appreciate any help you could offer.

Thanks for your time in advance^^

Maybe the players see either images from their backstory or things that their characters want, and they have to succeed on saves or be lured into a pit or other trap.