Escape the Island

I use the marker to write "Help, I am trapped on a deserted island." on a large leaf, wedge it into a bottle, and then toss it into the sea. After hours of searching, the coast guard finds me and returns me home.
I leave behind a dreamcatcher.

I use it to make a great bonfire, which gets seen by a passing cruise ship. They take me on board and I get off the island. Unfortunately, they also kick me off at the next port for singing the Slowpoke Song too loudly.
I leave behind the music video for the Slowpoke Song.

The power of amazing vocals blasts me off the island.
I leave behind a ham sandwich.

I yell this at the local monkeys. They send me flying off the island by means of a trebuchet.
I leave behind some miscellaneous cosplay armor.

I go flying off the island by the power of steampunk pantomime and music combined. STEEEEEEAAAAMPUUUUUNK!!!!
I leave behind the upcoming Saint Seiya anime.

I take this decidedly ink-free pen and sell it to the island's monkeys for an exorbitant sum of money, calling it a MagiQuest wand. I then use the money to buy a plane, which despite my lack of a pilot's license or formal training I somehow manage to fly off the island, then promptly crash it into the Sydney Opera House. The Australian government makes me use the rest of the money to pay for the damage.
I leave behind a subpoena for Asphoxia to appear in court where I'm on trial for accidentally destroying the Sydney Opera House.

I start waving it at things until finally I am magically teleported off the island... and back into court.
I leave behind some tiramisu.

Since I am stranded on the island with one of my personality traits, I put on my Gemini armor and laze around a while. "I should call the other Gold Saints to rescue me," I say to a passing Specter, "but I really don't have the motivation. They'll just make me do WORK!" The Specter is so appalled by the fact I may have to actually put in some effort as a saint that he runs away. Eventually, I get hungry and decide to call for help. The other gold saints ridicule me for getting stuck on the island in the first place, but bring me back to Sanctuary anyway.

I leave behind a business card for the Psych Agency.

I look at Wheatley. He looks at me. Not having seen this kind of technology in the eighteenth century, I am unsure how to act for a moment. Then, I toss him in the air and drop kick him. He breaks the window of a passing cruise ship. The ship takes me on board but locks me in the brig for shattering the window to the honeymoon suite.

I leave behind a mango pineapple smoothie.

I drink the hot cocoa and then use the energy it gives me to swim home.
I leave behind an English version of The Lost Canvas manga.

I sing along in a passable baritone. We saints aren't trained musicians, after all. (Unless you're Benetsnasch Eta Mime, but he's from the Asgard arc and therefore is lame.)
My singing activates a mechanism left behind by the island's inhabitants of ancient times. It happens to be a submarine. I somehow manage to pilot this mysterious device back to Sanctuary.
I leave behind my twin brother, Gemini Defteros.