I decided to try these out on a couple nails, and do an M&M inspired choppy rainbow gradient on the other two nails using:
Zoya Carmen (red),
Barielle Fire Me Up (orange),
Zoya Pippa (yellow),
Zoya Josie (green),
Zoya Breezi (blue),
China Glaze Mahogany Magic (lighter brown),
and Zoya Louise as the base for my middle and ring fingers.
So even though the 3D M&Ms are really cute, unfortunately they were just too big for my nails for an everyday look that I could actually wear. I think they would be better for some sort of craft project. You could probably get away with wearing just one per nail, but even then they are quite on the large side; they are listed as 8mm.
Still, these are $4.82 on the KKCenterHk website, they come in these three colors plus pink and yellow, and you get a package of 5 M&Ms.
If you use my coupon code NLL, that is good for 10% off your order.