A kettle is very useful indeed! Good choice! However, they can trace the crime back to you. How are you going to explain their missing kettle in your room? Best choice is consumables:
1. Instant gratification
2. No evidence
Myself, I stole a full loaf of bread once, a pack of cigarettes, weed (420blazeit) and a bloc of cheese. All separate instances, mind you. You don't want people to think you're some sort of criminal.
From best to worst:
1. Weed - I told her I stole her weed and that she could come over that night to smoke it with me. I will keep it PG but let's just say I'm not a vigin anymore
2. Cigarettes - I'm a dirty smoker and there is nothing better than a nice cig after a night of drinking and smoking to really hammer home that hangover.
3. Cheese - Always nice to have a tasty and healthy snack during your walk of shame.
4. Loaf of bread - Let's just say that after a night of drinking and having all fluids drained from your body, dry bread becomes a choking hazard. And believe me you don't want to fight for your life while nursing a hangover.
Anyways, share your stories, ask me whatever you want, I'll try to answer based on personal experience but I might just make up some bullshit. Who knows?