Hi AwesomeSauce99:
Your plants look so pretty in those containers. You created a perfect composition with the placement of each plant, each container and even the mat it is sitting on. There is an artist/designer in you that probably shows itself throughout your whole home and gardens.
I am very visually driven, and "need" things looking pleasing to me, and I have grown plants in containers with no drainage many times. I was very careful to water lightly, I even have a book that demonstrates with pictures how to place rock or shards in a closed container for drainage, and I followed it.
I had a few friends who shook their heads, warning me I would kill the plants, but I loved how my plants looked, and was not knocked out by their sometimes unappealing old terra cotta stained pots, and I watered so carefully.
All those plants are long gone. The warnings are true, and it is absolutely non negotiable, and I really really hated accepting it. It is a slow slow death, and by the time I accepted I was killing them, the rot was too severe. I hope you don't loose as many as I did so many many years ago.
There are drill bits for glass, that help people like you and I get holes in things that don't have them. I am not sure if glass canning jars can be drilled, but most ceramics for sure. You can have those pretty containers and healthy plants. Good luck, and very pretty planting.
Laurie B