Let an expert handle this, please: At first look, I thought this plant was a Sperminis Ivy:
But this plant has a distinct and sickening odor. It's doubtful that The OP would be able to take the photos that he shows.
Then I thought that these plants were Lil' Boners:
However, Lil Boner plants seem to be much too small, and it's a fungus anyway. These little rascals literally pop up everywhere, even when you don't want it to. Then other times you want it to and it won't.
I next considered the Red-Tipped Dick Vine:
As you can see, however, the plants in the OP's Pictures lack the red color. Besides that, it is a crime to show them to children.
I finally came upon the answer...the Clitoris Bulbaris:
The plants the OP shows are not yet mature; when they do mature, she's a beauty but she is very hard to please. If she doesn't like the way you're watering her, she will die, but not before several emasculating passive-aggressive comments about your plant-watering ability.
I hope that this settles the discussion. You're welcome.