You can crochet this toy with your favorite yarn - cotton, acrylic, plush yarn and your favorite crochet. The height and width of your toy will depend on the thickness of the yarn and the hook.
But from yarn with cotton after active games-the look will be much better than from 100% acrylic. If you immediately use a good yarn -100% cotton or mixed 50% cotton -50% acrylic, then the look of your toy will delight you for a long time.
Toys should be crocheted very tightly. Then when filling with filler
1 they do not stretch much.
2 the filler is not visible through the holes
3 they have a beautiful look like in the picture of the patterns.
I recommended yarn
Sample tied with acrylic yarn-218 yds250m / 100gr- red 30yards , orange 40 yards, yellow 40 yards, green 50 yards , light blue 30 yards , blue 30 yards, purple colors 40 yards.
When crocheting from the recommended yarn, you will get the following sizes of geometric shapes
Height of the triangle 13 sm/5 inch
Ball in diameter 8sm/3 inch
Height and width of the сylinder 10,5sm/4,5 inch height,
Height and width of the prism 8sm/3 inch height, 9,5sm/3,5 inch width
Height and width of the square 8sm/3,2 inch height,
Height and width of the rectangle 18sm/7 inch height,
Height and diameter of the oval 10sm/4 inch height

Hook-No. 2 -3. I’m crocheting №2 . I know that many people find it very difficult to crochet such a small size. This is why I recommend hook №3.
Scissors
Needle
Filler - synthetic fluff