Nupps are little bobbly things that are characteristic of Estonian lace. Here's a picture from the Estonian Lace book I talked about yesterday featuring lots of nupps.
Nupps are easy! Nupps are fun! Nupps shouldn't drive you crazy!
The trick to nupps is really quite simple: put lots of extra slack. Here's a walkthrough on nupp-making.
In a single stitch on the knit side: K1, YO, K1, YO, K1. Notice in the images below that there is a lot of slack in these stitches. Here's the first K1:
And K1, YO, K1:
And here's the finished set of stitches:
Now, on the purl side, notice how easily the needle runs through all 5 stitches, thanks to the extra slack you left on the knit side:
Just purl as usual:
Here's what the finished purled stitch looks like on the wrong side:
And admire your plump, finished nupp: