We LOVE these free pattern block activity cards.  I printed them off and covered them with contact paper for longevity!

FREE printable - pattern block activity cards (from Confessions of a Homeschooler). Use with wooden pattern blocks.

duplo pattern. Children use a pattern template on paper and create the same pattern using Lego or unifix cubes.

Lego duplo Patterns - bet they're cheaper at Once Upon a Child than unifix cubes

Patterning Learning Goals and Success Criteria for Kindergarten!  AB patterns! …                                                                                                                                                                                 More

I love this learning goal and success criteria chart for patterns, I would definitely create my own and have it in my classroom to show what we are learning.