This is a Floating Bath Puzzle where kids can try to stack the shapes in their appropriate slots without sinking the puzzle board! This was something i thought of while trying to think of more things to keep my boys occupied in the bath and both my 1.5 year old and my 3.5 year old loved it so hopefully your kids will too! 

  I Printed this all in 95A TPU and it came out  awesome! Flexible enough for some fun soft toys but plenty durable enough to not to fall apart. Took a little trial and error to get the feel right but here is what i have found works best:
  - 3 Wall Loops
  - 5 Top shell layers
  - 5 Bottom shell layers
  - 8% Gyroid Infill
  - Slow your speeds down!
  - If you find issues with stringing with TPU try printing a single item at a time.
  - If you need additional printing info that i use with TPU, send me a DM.

With all that said i am sure this will print great in PLA or PETG!

You should be able to scale this to any size you want. The size that it is in the STL files seemed appropriately small enough for little hands yet large enough to not pose any sort of a choking risk.  

If you do decide to print this; first and most importantly i hope your kiddos enjoy it; and secondly post a make! I would love to see color combos and different materials used.

Update: Increased the size of triangle and star to be 60mm tall to match other existing shape heights.