Tulehui Building Toys 223pcs STEM Toys Set, 3D Puzzle Construction Engineering Building Blocks, Educational Stem Activities Toys for Boys and Girls 3 4 5 6 7 8 9 10 12 Years Old

Like Einstein said, Play is the highest form of research, learning new things thru discovery is the most fun way for kids.
Highly recommend for the budding engineer in your life (boys or girls).
Endless possibilities
223pcs Building toys  can keep a child busy and make variety of designs. They can play it to discover, build and learn for hours and hours independently, making playtime challenging and interesting. 
What’s more important, adults can get some alone time to relax and recharge.
Challenging family activities for both kids and adults
Construction toys with varieties of colors and shapes, paired by graphics, kids can promote fine motor skills, stimulate creativity and imagination. 
Parents can also be more involved in their playtime and create more unique designs together, which will Generate more sense of accomplishment.
2D/3D Free conversion
A booklet enclosed and 8pcs cards can make different pictures or designs. Simple assembly, strong three-dimensional effect. Kids can use the battery-operated drill, one of the other manual tools or theirs fingers to build figures.
Portable design carrying case
This STEM toys set comes in an adorable carrying case which is nice to keep/organize all the small piece into one place, never have to worry about “step on Lego” moment, or slowly losing all the parts. 
The box serves as storage for the pieces and the top serves as the tool board as well.
Great educational toys set for young ages
Many parents have been trying to find toys which can last kids longer. This stackable mosaic  toys will be a good investment which can grow up with your kids for 3-4 5-7 6-8 8-12 years old.
Details:
The size of the storage box about 24cm * 24cm * 7cm.
Not suitable for children under 3 years. Use under adult supervision.