Vegetarian Panini Sandwich Ideas?

Sandwich Ideas? - vegetarian panini

I have a kind of sandwich with this recipe for avocado hummus I've found.

http://www.recipezaar.com/162721

I have a kind of vegetarian sandwich. I do not know what other vegetables / type of bread, cheese or anything else that I use to do so. I'm not sure to be a hot or cold sandwich. I think I could make a coat or a panini or something. In any case, I am looking for ideas. Thank you.