To crochet similar sachets, crochet a chain to desired length - 4 inches [10 cm] is a good size - then single crochet in 2nd chain from hook and in each chain to end.
For the next row, chain 1, turn your work, and single crochet in each stitch across. Repeat the last row until the sachet is a square, then end off. Make another piece the same size.
To join pieces, single crochet through both layers around 3 sides, working 3 single crochet in each corner. Stuff with the lavender-filled cheesecloth, then single crochet (again, through both layers) across open side of sachet to close