Orimina Glass Round Wall Hanging Planters Terrariums Air Flower Vase (12 cm Diameter) - Pack of 6

Where can i buy the water plants? I look up patho but they are in soil. I want a couple different options but don't want to have a potted plant as wel

What plants are being shown in this photo?

Can you put dirt in them? I wanted to hang house plants but unsure if it would be too heavy?

Is it possible to purchase just one? I need to replace one that has broken.