Needed materials and equipment will depend on the projects the crafter chooses.

Some common supplies:
Yarn
Cotton balls (for projects involving stuffing or as a fiber source to spin)
Embellishments like ribbon or beads
Permanent markers, fabric pens, or tie dye (for projects involving coloring yarn or fibers)
Plastic canvas
Knitting needles in various sizes and lengths, possibly also double-pointed
Crochet hooks in various sizes
Knitting looms in various sizes
Stitch markers
Ruler or tape measure
Scissors
Yarn needle
Drop spindle (for spinning longer pieces of yarn; can be homemade from a chopstick or skewer and a brick-style pencil eraser)

Options under $5 each are typically available for all of the above

Some crafting supplies and equipment like knitting needles, yarn needles, and scissors have functional sharp edges/points. For an average person of the intended age for this class these tools are age-appropriate, but if there are safety concerns such as grabby younger siblings or dexterity issues, some safer options include pre-cut yarn, using nail clippers instead of scissors, using dried glue on the end of yarn instead of a needle, or choosing projects that don't require the particular tools. I'm happy to research and brainstorm if you need more safety tips!