The ornamental design for a toiletseat for babies, as shown and described.
1. Toilet seat for babies
1.1: Perspective
1.2: Front
1.3: Back
1.4: Left
1.5: Right
1.6: Top
1.7: Bottom
1.8: Perspective
1.9: Front
1.10: Back
1.11: Left
1.12: Right
1.13: Top
1.14: Bottom
1.15: Reference
Reproductions 1.1to 1.7are a toilet seat in a closed position, whereas reproductions 1.8to 1.14in an open position; reproduction 1.15is a perspective view of the claimed design in an environment of use; the parts shown by means of broken lines in reproduction 1.15are not part of the claimed design.