What's the name of those little toast round things

I want to use them for something akin to what you'd put on snack trays.  I'm thinking of using them to dip into guacamole or hummus or some type of dip.  Maybe putting some type of tahini spread on them with tomato and cilantro or crushed nuts.  

And if anyone has any ideas, I'm open to suggestions.  But I still don't know what those little toast round things are actually called, and I do not want to use anything like Triscuits or pits chips or crackers.