One thing I tell new teachers is to engage a new class with each student one on one. Not for every question, but first start with a few warm ups:
The first few with a simple hello, good morning
Then what's your name with some more kids
As they get more comfortable (gage their reactions and responses) turn it up accordingly. If they have problems, don't denegrate them (adults) with 'what's your favourite colour' or 'how do you spell cat?'
I've often found the students themselves give me material to use in class, be it clothing, something they carried in like a musical instrument, or even something they did before class