Let me elaborate.
Earlier in the week I started a Little Star sweater for my younger son. I bought the yarn four years ago to knit the same sweater for his big brother and never got around to it. Since it's a toddler pattern and I only bought enough yarn to make it and no more, I thought I really ought to crack on and make it while the little one is still small enough to wear it.
It's a cute pattern. The hems have a rolled edge, then a contrast colour ribbing, then the main body of the sweater is a star motif on a plain background on the front, and a plain back. I started the back, knitting the edging in blue, then the ribbing in green, then the rest of the back in blue.
Last night I cast off the back. Hooray, on to the front. Cast on the required number of stitches in blue, worked the 5 rows prescribed, went to switch to the green and... I can't find it. It's not on the sofa where I had left the rest of my work. It's not in my knitting bag. There are three partial balls of sock yarn in there, including one I need to make the second sock of a pair, so I'm glad I found that, but no sign of my green cotton.
I've tried under the sofa, under the sofa cushions, in my two other knitting bags. I've looked in the bag where the rest of the yarn is waiting, just in case I was overcome with an uncharacteristic wave of tidiness and had actually put it back, but no. I've tried under the bed (what can I say, I take my knitting to bed with me sometimes. It's OK, my husband works late and doesn't mind!). I cannot find this green yarn anywhere. I have no more. The pattern only calls for one ball so I only have one ball. There isn't a second one I can break into until the first one shows up.
So for now, the sweater is stalled at a back and a half-inch of front.
If anyone knows where my green part-ball of Rowan Cotton Glace is hiding, please draw it to my attention. Its presence is required!