Any lidded jar that has clear glass (even plastic container) is suitable for building a closed terrarium.
The idea is, the light should be able to pass through the container, and proper humidity and moisture are inside the jar.
Although any weirdly shaped jars work for a closed terrarium, the size, the shape, and the size of the opening of the containers make a difference.
For example, a narrow mouth jar may not be suitable for Succulents or cacti, but it works well for humidity-loving plants.
Some of the jars you can consider for a closed terrarium:
- Fishbowls
- Milk and wine bottles
- Light bulbs
- Glass domes
- Wardian cases
- Apothecary jars