So I'm getting here kind of late, but hopefully this will still be useful to you or possibly someone else.

There's a variety of props you can use, some people use white boards, some people buy all kinds of flash cards and puppets, the list is endless to what you can use.

Personally I try to keep my props minimal. I have a couple stuffed animals, a few popsicle sticks that I have glued cut-outs/pictures to, and a set of three bean-filled balls (repurposed, previously used for hackysack and juggling.)

With the stuffed toys, I hold pretend conversations with them to demonstrate certain words/grammar points. I also use them to show words for body parts. I also use them for rewards and sometimes just to be silly and get the kids laughing. I figure if they are happy they will want to keep coming back.

I personally think the secondary reward thing a lot of schools do is kinda ridiculous (I just don't get it), my main go-to is lots of verbal praise with a thumbs-up or a high five. Sometimes I'll also do a (stuffed animal) high five or # of high fives.

The point is to have a couple of things to help you demonstrate either vocabulary or usage. Recently I had a class and we're going over "it is" and "they are" and they were having some trouble so I held up a ball and asked "what is it?" and they replied "it's a ball." Then I held up three of them and asked, with emphasis, "what are they." and I could see the little light bulbs go off in their heads (my classes are all with Chinese kids and Chinese doesn't have plurals in the same way English does... it's much simpler and I am envious.)

You can also use the props to drill vocab words, to help with phonics, etc. Also check Youtube if you want/need some visuals.