Hmm....My gates are golden with stone eagles perched on the very top of each post. My gaurdian is a tiger, mostly because that is one of my favorite animals! It prowls back and forth all day...

My gates are weathered iron with a large latch in the shape of a sun and a moon. The watcher has to unlatch the sun from the moon to let any ideas go through. Since this process can take quite a while, it gives the watcher much time to think whether or not the idea is actually worthy of my pen and paper. This makes sure that only the very best ideas get through, since the watcher wouldn't want to spend all that time on a bad one. The watcher itself is a beautiful beast made of the pages of books, pieces of drawings and short stories all written and drawn in my hand. The letters curly cue all along the beast's body, from the head to the flank, creating the most unique markings. It's eyes are the only thing on it that isn't paper, and they glow brighter than the sun but at the same time weaker than a candle in the rain. The watcher and I are rather good friends, as a watcher and a young author can be. He's rather nice to me, but he does what he wishes. 

My gate is a set of double doors that are made of a rich brown wood. They are bordered by large square grey stones with miniscule runes carved into them. The doors have no handles, and a maple tree is engraved in gold upon them. There is also a small gold plaque with my name written on it at eye level. 

My watcher is humanoid in shape, with pure white fur covering it. It has no feet, just furry white stubs and it has cloven hooves for hands. Its face is flat with no mouth or nose, just two gigantic iridescent green eyes. Course brown hair covers its head and falls all the way to the ground like a cloak. It holds up an old rusty lantern that lights up the gates.

I will post a drawing that I did later. 

My entire gate is made of brick hung with ivy. The ideas seep through any holes created in the mortar of the bricks or by the loops of the ivy. My watcher is an acrobat, constantly moving and backflipping to block or pull out certain ideas. Sometimes she's absentminded, and sits on the wall, letting bad ideas through. But when she does that, she'll cartwheel after it. Sometimes she catches it after it hits the page, in which case she appears to me in the form of an enormous eraser. Sometimes she's active all day, swinging on the ivy. Those are my brainstorming days. I like my watcher. She reminds me a bit of Kate Wetherall from The Mysterious Benedict Society.