That's a GR8 idea of yours,
Nancy!
I crocheted a very small round dishcloth for under DH's denture square plastic container with lid, he uses at night with denture powder. Then, I invented a coaster pattern for under pump soaps, which I *REALLY* like!
Here goes:
Using Peaches 'n' Creme 100% knitted worsted cotton yarn & a "G" size crochet hook, you do this:
Round Coaster Pattern:
Chain 8, join with slip stitch to form ring.
Row 1: Chain 2, (1st HDC made), HDC in same stitch, 2 HDC in each chain around. Join. (16)
Row 2: Chain 2, HDC in same stitch, 2 HDC in each HDC around. Join. (32)
Row 3: Chain 2, 2 HDC in next HDC, (HDC in next HDC, 2 HDC in next HDC) around. Join. (48), I think.
Row 4: Chain 2, HDC in next HDC, 2 HDC in next HDV (HDC in next 2 HDC, 2 HDC in next HDC) around; Join. (65)
Edging: chain 1, slip stitch in each HDC around, join, fasten off; weave in loose end.
I believe the slip stitch edging prevents this coaster from curling. I had tried to HDC around, but it was curling on me, didn't look quite "right" or finished correctly. It was a "blooper" and the slip stitching looks nice around, too, because you can see it on top, all around, which finishes it nicely, making it look attractive, too. It was fun to "invent" something new.