A BUNCH OF SKINS
So me and my friend (lilbug4life1) decided to make a bunch of skins together. We focused on the champs that had only another skin. So we came up with these: (Sorry we could not come up with pictures because its just WAY too much.)
-Mecha Zed
Riot, please create a kickass mecha-looking skin for Zed, my friend only wanted Zed's recall to be like the other mecha skins. Aatrox
turns into a plane and Malphite
turns into a bulldozer thingy. We wanted Zed to transform into a motorcycle. His shurikens will be wheels, his weapons will be on the side of the front wheel, his head will be the motorcycle head so like his eyes are like the lights, and his head is above the fron wheels. Also other skins are: Blood Moon and Full Metal Zed.
-Mecha and Full Metal and Justicar Kalista
-Pool Party Yasuo
We just want that awesome balloon sword.
-Pool Party Zac
A concept that my friend made up. Zac would wear a swimming cap and swimming trunks. He would be blue too.
-Full metal, Boom Boom, Arcade Vi
-Soul Reaper and Mecha Thresh
-Arcade Blitzcrank
-Project Riven
Mecha Jarvan IV, Jax, Volibear, Rek'sai
We really want that Mecha family line
-Battle Bunny Ahri
When Battle Bunny Riven
wasn't enough
-Project Master Yi
-Pulsefire and Secret Service/Spy Lucian
Ah, Pulsefire Ezreal... just an amazing skin. Lets add this one!
The second one seems like and amazing concept, thinking about Lucian himself.
-King/Emperor Azir
He is already king. ;)
-Elvis and Secret Service/Spy Draven
More and more fame!
The second one to disguise poor Draven. He got too many fans.
-Junkyard Twitch
-Headmaster Zilean
-Einstein Heimerdinger
-Jurassic Swain
We just want his bird to become a fossil.
-Jurassic/Fossil Gnar
Why are we leaving poor cuddly Gnar out?
-Arclight Xerath/Jayce
-Dragon Slayer Shyvana
-Justicar Nocturne
Let's make him shiny!
-Kitty Cat Rengar
Let's make him more cuddly.
-Lord Kassadin 
If you want more clarification on some of the skins, just comment! :]