Update: If you'd like to make these pigs, you can use this basic template — if you leave out the tail it's exactly the same. I just cut the pieces out of a sweater rather than a glove.
I posted earlier about Miyako Kanamori's Sock and Glove (Creating Charming Softy Friends from Cast-off Socks and Gloves). As you can tell from the title, this very sweet and simple book has easy patterns for fashioning stuffed animals from gloves and socks. A few of the patterns, such as the fish we posted about, are suitable for socks that have lost their mates. However, most of the patterns require a pair of socks that are in good condition (including the heels and toes). We don't often have extra pairs of socks in good condition, but we do often have t-shirts and sweaters that get a few holes, snags, tears or worn through the elbows. Could you just cut sock shapes out of the fabric and use the arms for the bits of the pattern calling for a tube shape?
A beautiful pink pullover which accidentally wound up in the dryer + a stripey long sleeve t-shirt with worn elbows provided the opportunity to try it out and yielded 4 pigs and 2 pig t-shirts. The first pig went to a birthday party and was promptly named Rocco and given a flowered kimono to wear over his striped shirt. The remaining 3 are currently waiting for a big bad wolf to join them (although, they've been waiting for more than a year now).
Here are the 3 little pigs: Karate Pig, Friendly Pig and Farmer Pig.
The original dog I tried from the book. A tip if you try these patterns: overstuff. The stuffing gets compacted really quickly.