So after much thinking and a few experiments, I made these felt lavender toys at the weekend.
Their bodies are filled with toy stuffing, and the fabric circles on their tummies are filled with lavender. The children are enchanted with them, but I'm not so sure.
I find their faces a little creepy - embroidered faces are difficult to get exactly the way I had imagined. I'd planned to leave the edge of the fabric circle raw and unfinished, but when I finished them, I thought it looked a bit messy.
This purple one had a different mouth to the other two. I prefer this big smiley mouth, but the children said it looked wrong.
The combination of toy stuffing and lavender stuffing is good though. They smell strong, because the fabric containing the lavender is just thin cotton; but they are still soft and squishy to hold. C and O love them, and have put them in bed, next to their pillows. That's a pretty good recommendation.
I think I'm nearly there - perhaps just a few more experiments with embroidered faces are required.