There is a nice set of filled Polka Dot Circles at Embroitique website that has several sizes and cost $2.99 that may help you.
Link Below.
EastWitch2
1. dots in the free set
2. Fall Leaves with Polka Dots Embroidery Designs labeled 426-leafset-pes from Apex has separate dots in it.
3. This Yahoo group has some in it, they are .5 inch .33 inch 1 inch mini satin stitched dots
4. Textured dots. go to link, sign in, come back and use this link again to find the page
Thanks so much for the Sew Forum Bubbles link - they are cute but I really need solid fill stitch (and the white part is open for these).
Anyone else have a thought on where I might find something like this?