Fabric scraps:

When sewing, you’re often left with tiny amounts of fabric that you usually can’t do much with. Save them—maybe your child would like to use them to sew clothes for their dress-up dolls! You don’t need a sewing machine or to be a sewing expert to do this.
Stretchy fabrics, such as jersey or rib knit fabric, are especially great for making cute outfits for little fashion dolls. And even the tiniest amounts are enough.
With the
sewing pattern for beginner doll clothes
, you can sew a top, a miniskirt, pants, and pajamas for the dolls.
Cardboard scraps:

Toilet paper rolls are also perfect for crafting something beautiful, especially if you know a little bit of crochet.
May I introduce: this is
Chef Charly.
The lower body is a cardboard tube covered in crochet, with room inside for a little surprise: a few sweets, a voucher for a cooking class or dinner, or even a special recipe from you. The upper body can be removed so that the package can be opened.
Leftover yarn:

Leftover yarn is ideal for creating crochet appliqués. Above, for example, you can see
crochet appliqués for a new baby
. Use them to decorate your greeting card or a diaper cake, or crochet a pretty animal wreath. You can also use them to spruce up baby clothes and bibs.