1. Goldfish

If there's a pet that everyone can bond over, it's a goldfish. Whether won at a fair or bought from the pet store, many of us have had a goldfish at some point in our lives. The fish itself shouldn't cost more than $10 and doesn't need a filtration system like some fish. A fishbowl, fish food, and non-chlorinated water will suffice. You can add rocks or fake plants for decoration.

2. Hermit crabs

Hermit crabs not only can be a friend to you but brings a sense of the ocean into your own home. They usually cost under $5 and change shells after growing, so it'll almost be like a new crab every once in a while. Supplies needed included hermit crab food, a water bowl with a sponge, and shells for them to change into.I've had many simple pets, and these are my personal favorite.

3. Beta fish

Similar to goldfish, beta fish don't need a filtration system. They also come in an array of colors. Simple again, they just need a fishbowl, filled with non-chlorinated water, and fish food. Tank decorations are optional.

4. Sea monkeys

Including the sea monkeys themselves and their kit, it's usually not more than $20. This includes a tank and their food.

5. Hamsters

A hamster costs between $10-$20 (supplies not included) but is a pretty easy-care pet which you can also play with, unlike most of the previous pets. Hamsters need a cage, bedding, food, and water (a wheel is optional).

6. Fancy rat

As opposed to a normal rat, this fancy rat you need to pay to come into your home. For an affordable price of $25-$35, you can get two of them. This fancy rat doesn't require a fancyhome, just a cage, some bedding, rat food, and water.

7. Leopard gecko

This gecko costs between $20-$40, and requires slightly more care compared to fish, but not as much as a dog or cat. Things you'll additionally need to buy include live crickets (as food), a water bowl, and a heat lamp.