Starting small and simple is better than not starting at all! I think you’re already taking steps in a positive direction and are trying your best to do what you can- and that’s a really wonderful thing! 
As for spellwork ideas, I love the suggestion Megan gave about enchanting the water with your prayer and using that to draw the bind rune. It’s easy, doesn’t cause a mess or permanent markings on the wall, and can be redone or touched up as necessary 
I know it can be frustrating and feel like a big road block to be missing or unable to find certain tools or ingredients to cast a spell- have you ever looked into making your own Inner Temple, Nixi? It’s a great way to make your own inner sacred space where you can cast without needing physical items.
I’ll put a link here in case it sounds like something you might be interested in:
→ Spells8: The Inner Temple for Casting Spells Without Tools
Sending big hugs your way- despite the challenges you are doing your best and, from where I can see, it looks like you are making great progress! Keep hanging in there and I hope that the path ahead is an easy and happy one for you. So mote it be! 