Cut or rip bandanas into strips about an inch wide.
To make it easier to add beads, roll the end of one strip into a skinny point and slide it into a bead. Pony beads and letter beads with 3.4mm openings work great.
If you want to add charms, use jewelry pliers to open the jump ring, slide a charm onto it, then close the jump ring after attaching it to the bracelet.
Tie the finished bracelet onto your arm. The bandanas will fray; this is normal.
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Notes
You can string beads onto single strands, braid strands, and add charms using jump rings, or whatever you'd like!