When a polka dot meets a matryoshka

You dive in a happy colorful world :

1 - Key holders in Hadarling Etsy shop.
2 et 3 - Fabric covered buttons in Nerverland Etsy shop.
4 - The brooch in Sew Realicoul Etsy shop.
5 - The pouch/pencil case in Hand made with joy Etsy shop.
6 - Doll buttons in Miss Apporo Etsy shop.
7 - The card-holder in Caro Fil's shop at A little market.

You can even sleep in polka dots and matryoshkas :

1 - Kids bedding at Les 3 suisses.
2 - A crib bumper set in Bouji and Nouna Etsy shop.

And why not some fabric to create your own stuff :

1 - The blue fabric in She's living la vida loca Etsy shop.
2 - The pink fabric in Beautiful work Etsy shop.
3 - The white fabric in Emi craft in japan and Fabric supply Etsy shops.

Handful of buttons

What could we do with spotty buttons?
Create and be able to say : I dit it myself! And this with only a few buttons.
Take an old shirt of yours, a coat, and replace the buttons by spotty ones : and voilà... your shirt as turned in a fun and unique one.
And for the skilful crafters, make bracelets, rings, necklaces like Kraplap ones on Esty, who is an expert in button art, or create very colorful brooches like Polka ones at Notonthehighstreet.

If you have may ideas of projects, you'd better by packs of buttons :

The Stitch End proposes bags of 24, 72 and even 140 buttons in mixed colors.

Dizzy Izzy et Feltgirl are offering packs of 10 et 50 in a single color or packs of 20 in the color(s) of your choice.

Then, you have packs of mini-buttons at Overspill and another kind of button at Feltgirl :

You also have lovely bags of 50 spotty buttons by Titchables on Etsy :