Snowball fight is a great interactive way of introducing new vocabulary, activating prior knowledge, building schema, or checking understanding of concepts.
PDF version here.
Its kinaesthetic nature goes down extremely well with younger children, but I think that older students can enjoy it just as much, given some encourgagement to join in.
You can put anything on the snowballs: pictures to match with words, definitions to match with vocab, pairs of synonyms, pairs of antonyms…the choices are as varied as your imagination.
Key for emerging ELLs is to allow them to decide on and explain their pairings. As long as they are thinking and justifying, it doesn’t matter if the answer is not ‘right’ at this stage.
Let us know how you get on with this strategy in the comments section.