As the next to post, with nothing left for me, I rip the rudder off your business and leave it for the next user.

I use the rudder for my pirate ship and sail off into the South Sea.

I leave a treasure map to the next user.

[I study the map after climbing aboard your vessel as we set sail to the Caribbean!]

v [I leave my girlfriend for the next user.]

We play cards. Then we consider doing something more involved...

...We end up deciding to play the now recently republished classic Dune board game that has been out of the shelves for years and years. Good stuff.

I leave a deck of cards for the next user.




Edit: clarified that it is a board game.

I shuffle the deck, then play a game of War with myself.

The first round is Joker versus Joker, and I am unable to figure out what the rule is here, so I give up.

I leave a complete set of regular poyhedra, each with numbered faces, for the next user. (Alternatively, you could say I leave a d4, d6, d8, d12, and d20 (note no d10!) for the next user.)

I roll the dice, take the numbers and buy the winning lottery ticket!

v [I leave the dice in a spiffy dodecahedron container suitable for display to the next user]

A pleasant relic of a display to enjoy with the eyes. Much thanks.

A cracked smoky sphere of some design was left behind. The colors inside seem to shift depending on certain factors which only certain people would know. It's weight is somehow light yet firm, it's size certainly larger than the average marble, but smaller than a cannonball.

I determine that this is the Sphere of Lanatir, put on my warmest clothes (including my fleece leggings! perfect for this occasion), travel to Gelidia, and put that Sphere where it belongs.

To the next user, I leave the Wand of Power that is found where I put the Sphere.

(Wait, why did I return one artifact and take the other one?)

(Extra credit: Can someone name what game I'm referencing? (Hint: It's available on GOG in some form.))

Without any idea on dtgreene's question :S
I leave to the next user all my ignorance (an infinite resource). Hope it helps! :P

Given that ignorance, it seems that, for the moment, I forgot my spells!

(Fortunately, this is only temporary.)

So, having forgotten my spells, I leave, to the next user, more Harmonic Gems (consumable that restores full SP) to the next user.

(Harmonic Gems are an item from the game I referenced in the previous post.)

I take the harmonic gems and sell them to a shopkeeper to buy a limited rideable donkey mount, which has 100 health points and runs 1.5 faster than other characters, that I leave for the next user.

I put on some comfy sneakers and mount the donkey, riding into the sunset lighting a totally healthy, organic tobacco-free cigarette.
I leave my very uncomfortable Seven-league boots and some plasters for the next visitor.

I take the seven league boots into my shop and try to figure out why they are so uncomfortable while leaving the plasters behind for the next visitor until I fix the boots.

I leave an old school, antique Super Nintendo with a variety of games of all genres, with a sticky note that says "WARNING-Your progress may be mysteriously erased at any point. This is what gaming used to be like."

[ I take the archaic gaming system and games to an auction and net a profit of $402,347.23 and I leave the next poster $2,347.23 ]