I send them to the emperor.
I leave a bag full of broken laptop batteries.

Thanks, I've always fantasized about setting a pile of laptop batteries on fire, just to see if it will explode and how bad it will get...

Pretty bad! I disappear as quickly as possible and leave the bill for the damage caused by the exploding batteries to the next user.

**leaves a copy of an incriminating video recording (of a certain laptop battery fire) which clearly exposes the identity of he who started it**

(The original has been handed over to the authorities.)

I upload the video on youtube, as the first entry in my new "Morolf's hilarious pranks" channel. It's a huge success and gets millions of views, generating some nice revenue for me.

I write a book "How to become a successful Youtuber" and leave it to the next user.

Following every single step of your book meticulously, everything gets a little blurry...
Next thing I know is that I'm the right hand of the leader of one of the world's largest cults.

I leave some brochures about my new faith and some of our followers to help the next person find his/her true self and inner peace by submitting him/herself and his/her belongings to the greater good that our community provides.

It's a big departure from my Lego-themed channel, but I upload a review tearing the ideas of this arson-based cult to shreds and leave a post-it note of the video's address.

I picked up the post-it note and started investigating the arson based cult alone. I was very close to discovering a huge plot when someone heard sand crackle under my steps and started to walk towards me in this dark decrepit basement...

Hiding behind a barrel, my legs shook with cold sweat. When I thought it was hopeless, I had an idea.
What if I use the light on my cellphone to blind him momentarily!

Then I realized I left my cellphone behind somewhere...

Found a cellphone...there were a lot of files, notes and pictures about some weirdo cult on it, written by some wannabe investigator...last entry was "tomorrow I'm going to infiltrate the cult compound", lol. I don't care about this nonsense and don't intend to return the phone anyway. I now use it for truly important things like playing Candycrush or looking at sexy Onlyfans accounts while riding on public transport.

I delete the cult files from my new smartphone, but leave them for anybody else who's interested.

I manipulate the files to cover our tracks.
And I leave a friendly warning for everyone who has the audacity to mess with us.
You will regret this, we have ways. Ways, so gruesome you can't even imagine...
(and by ways I mean lawyers)

I leave a message mentioning the fact that the preceding posts were being observed very closely by a figure hidden in the shadows. It would be best to be on your guard, oh doers of pernicious evil.

I angrily throw the message in the next garbage bin...I want to be gifted luxury items, not just scraps of paper!

However, since I'm feeling generous today, I leave a ridiculous superhero costume, in case "the figure hidden in the shadows" (wow, this guy must be ugly if he's always hiding in the shadows) actually wants to emerge from the dark.

I take the super-costume and leave my clothes instead.

I take the clothes and put them on a scarecrow and leave the scarecrow on your backyard.

While taking out the garbage, I nearly get a heart attack caused by a scarecrow wearing pink pajamas, a green fedora and white bunny plush slippers.

I leave my wet pants to the next person and my dignity on top of it.

The urine-soaked pants are disgusting, I pick them up with a tree branch and throw them in the neighbours' garden. "The dignity of a mighty king" is much better though, I sell it on ebay.

I recently found a note from a certain "Dr. Xenija", asking for help: "Help, I'm being kept captive by this weird cult! They're responsible for all the recent fires, because they worship the fire god and want to burn everything down. They've also said that they're going to burn me alive as a sacrifice in a wicker man. Please notify police, I think I'm in a warehouse near the harbour."
What a distasteful joke. I leave the note to the next user.