This mat is great to take outside as a sitting mat, as a meditation mat, or (with added carpet tape or rubberized backing) an indoor rug. It is thick and dense, making it comfortable on hard ground, and extra durable.
Step 1: Materials
An assortment of waistbands, inseams, and cuffs from old jeans.
For this mat I used eight waistbands, 2 1" wide hem cuffs, and eight inseams.
Leave tags on the waistbands to add an element of design.
Sewing Machine with a #16 needle (ofter labeled "leather")
Cotton Thread (use a contrasting color if you like for added aesthetic appeal)
Basic sewing skills
3"x4" patch of cotton muslin
permanent black fabric marker.
Step 2: Arrange Peices
Pay attention to color, width variation, tag placement, to create a balanced and pleasing mat. Trim all pieces to the same length, I matched the length of the shortest waist band, about 32".
Be sure to trim away the buttons from the waist bands, as they are very uncomfortable to sit or stand on.
Save enough inseam material aside to edge the entire mat. I used both inseams from a pair of pink jeans to do this, for contrast and a splash of color. For a more colorful mat, You can dye your materials with standard fabric dye. I recommend dyeing pants prior to dismantling them. The dyeing process requires washing, which will heavily fray cut denim.
for directions on efficiently dismantling pants, see the instructable link in the intro.