the dark pink "long" comb in the middle of first picture is a Barbie comb (unless it's a fakie comb made from the Babrie mold). They are quite common so I don't imagine they are worth more than $1 at best.
The only other thing I know for sure is, as you said, Splash happy puppy. I was recently asking for the PC on that whole set mut no one said anything so at this point I have no idea on their value
![Smile :)](https://mlparena.com/Smileys/default/smile_001.gif)