ok heres a list of some things i think would be good
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Hoverboards
http://www.garrysmod.org/downloads/?a=view&id=44991

This SENT/Scripted Vehicle hybrid allows you to skate around the level on a hoverboard. Complete with jumping, twisting, boosting and grinding, the hoverboard uses a unique system of physics simulation to provide smooth and easily controlled movement

i've played with the early version of that and it was awesome ^.^
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Hatmaker
http://www.garrysmod.org/downloads/?a=view&id=72932

lets characters place diffrent props on themself ^.^ i think it automatically resizes it so you cant have like citadels on your back and stuff, also they go onto your bones so you can put em on ur legs your mouth your face ect and can x y and z axis to move them around that point
fun indeed, i put a acoustic guitar on my back ^.^ and a Cigarette in my mouth

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The usable ipod!
http://www.garrysmod.org/downloads/?a=view&id=49897

contains

-abba - Does your mother know
-AC/DC - Highway to hell
-Eurithmics - Sweet dreams
-Haiducci - Dragostea din tei
-Hellogoodbye - Here
-Linkin park - Shadow of the day
-Mission impossible
-Portal - Still alive
-Red Hot Chili Peppers - Snow (eyh oh)
-Sheryl crow - Real gone
-Pakito - Are you ready
-Army of hardcore
-Mario song from Rocking Fortress
-Daft punk - Harder better faster stronger
-GTO
-Red hot chili peppers - Track 1
-Red hot chili peppers - Can't stop
-Red hot chili peppers - Californication
-Floggy molly - Track 1
-Linkin park - What i've done
-Linkin park - numb
-The doors
-The doors
-Floggy molly - Rebels of the sacred heart
-Floggy molly -
-Floggy molly - Salted dog
-Floggy molly -
-Scatman - I'm a scatman
-Green day - Land of broken dreams
-Sandstorm
-The fray - How to save a life
-Christophe mae - Parce qu'on sait jamais
-Christophe mae - Qu'on s'attache
-Robbie Williams - Feel
-Black Betty

I think you can add your own im not sure, but hell its a music player lol
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In-Game youtube screen
http://www.garrysmod.org/downloads/?a=view&id=73006

looks awesome, lets you play videos off youtube on a wire screen!

Hoverboards aren't needed and will only cause lag.

CapsAdmin's hatmaker isn't needed either. Haven't tried it though.

We don't need iPods and 50 megabytes of songs.

There is no need for 200 more songs to download.
But I heard about this YouTube player and it actually sounds pretty nice!

We don't know if the YouTube player will sync with all clients, and I doubt it does.

by sync with all clients i suggest you mean buffering and the image?

i've used it and it people say its buffering even though to me its not, also some people say
that the youtube video player is black with nothing on, while im watching it fine,
to correct that you just restart the video until they can see it...

The Youtube Player is just going to be used to annoy other players.