
How about a few simple acts of green in one go. Liberated Bottle Caps and selvaged ends of yarn combine to create a functional and zakka trivet. A trivet is a coaster that helps retain heat while it's main purpose is to keep your table top clean and safe. So reuse, recycle, and reduce the number of times you need to zap your tea or soup in the microwave with this free pattern.

Keith's Bottle Cap Trivet
©Morgan Forrester, 2008
Materials:
14 Bottle caps without dents
Small amounts of yarn and cotton. I used vintage scraps which are equivalent to:
No. 10 Crochet Cotton
DMC Embroidery Floss
Fingering weight wool.
To get a vintagey colour palate, try tea dying white, cream and baby blue. Tutorial
here.1.00mm crochet hook (larger for heavier wool)
Darning needle. -I love Chibi needles for their bent tip.
Pattern:
ch 10, sl st to form ring. (Do not opt for magic loop)
ch 4, tc in next ch st, *2 tc in each ch st* around. (20 tc) sl st in 4th ch to join.
Begin creating the pocket for your Bottle cap by double crocheting in each tc BUT do not complete the stitch -leave each dc on the hook. Your hook will only accommodate so many stitches. When this happens, simply yarn over and pull through all loops left on the hook. This will rapidly decrease the number of stitches on the next round. Join beg and end of the round with a slip stitch.

If you find this a bit tricky, you may try the following after the tc row:
ch 3, dc in each tc, sl st in 3rd ch to join,
This is a good time to insert your Bottle cap.

ch 1, sc2tog in each dc, sl st to join.
Rep this last row until a small opening remains no matter which decrease method you use(number of rounds will depend on gauge). If you look closely, you'll see that I used both methods project.
You may choose to leave this open; the Bottle cap is secure.

To close, sc3tog as possible, then tie off leaving a long tail. Thread this tail on a needle and sew close. Snip, but keep your tails!
Simple sewing attaches the Bottle caps together. When connecting two colours, sew with the tail of the lighter colour unless it is cream/white. White stitches stand out too clearly.

My trivet is a simple shape, but that means that little fibs really show up. Here's how I would connect the caps if I were being a fussbudget. This technique is a good one when dealing with crochet motifs in general.
Trace your caps onto brown paper in the following pattern. A vertical row of:
2, 3, 4, 3, 2
Assign your colours and note them.
Attach the caps in vertical rows. Next sew the rows of 2 to the rows of 3, and then connect the rows of 3 to the middle, 4 cap row.