I made the cutest, easiest, felt coasters in the shape of a leaf and did them in Autumn colors. I hand stitched these, while watching TCM. Didn't take long and viola, beautiful coasters!
Imma show pic's so bear with me, camera batteries charging and I'll have pics up soon...

Felt Leaf Coasters

These are cut from wool felt because it repels moisture better and these are coasters. Being used in Autumn and winter, because of their colors and design, chances are there's not gonna be a lot of condensation from the glass like iced tea would cause in summer. Nonetheless, you want to have felt that will not hold wetness and leak through to table. They are for looks, too, folks, so they won't be as effective as glass or metal coasters.

I cut a template for these on the fold of the fabric, like you would a heart but don't cut the indent for the top of heart. My measurement was based on the bottom of my widest glass. Yes, I realize I am so precise - not - but really, it's not hard. These are 4.5 x 5.5, 4.5 at the widest part.

These coasters are two ply - two pieces of felt. They are sewn with a hem stitch on the outside of the leaf for stitch ornamentation. Just stitch at regularly spaced intervals about 1/4 of an inch apart and 1/4 of an inch from edge. I used contrasting thread because, well, if you don't you wouldn't get the full effect! (I did try them sewn and then flipped rightside out and while they were nice they lacked a "primitive" art value, to me).

After finishing the hem stitching on the outer edge, simply top stitch the veins of the leaf. Be sure to go all the way through both ply so the flip side looks good, too. And viola, leaf coasters.

I made two sets of 6 coasters for $4.00. Use a heavier gauge thread too, it will go faster and smoother and your veins will be prettier.

I'm making some other shapes for other holidays and seasons. My daughter loves them with her toddlers around, they love them too.