One of the first operations I did was a mixture of techniques involving bibliomancy, water enchantment, and invocation/possession.
I was feeling blocked in the beginning of my research into the occult, having just two books I was working with. A.E. Waites, The Book of Black Magic and of Pacts, and Simons Necronomicon. I was a complete newb at the time and had no experience besides some success with superstitions from childhood about making wishes, and some rune work I had done as a teenager using runes from the lord of the rings, engraved onto a baseball bat to enable it to hit better.
I decided that I needed some way to accelerate my gaining of understanding and occult knowledge, as I felt confused and blocked in my advancement. On intuition I thumbed through the Book of Black Magic and wrote down some random letters from a series of pages, spelling out a name. I knew that this was the name of the spirit that would be available to help me. I then poured a cup of water on the table and held an intention that the spirit would enter the water, and an understanding that I would allow it to live inside me and share my experience of living, if it shared with me it’s knowledge. I then left my apartment and came back 10 - 15 minutes later and drank down the water.
After that I felt much more confident in studying magic and the occult. I became obsessed with learning and read a book or more every week for a whole year. I also became somewhat depressed and felt sicker than usual. A couple years later I realized that I had gained what I needed to from it, and banished that spirit. Which did not work right away. So over a period of weeks maybe months I tried different methods of banishing until I was successful.
Other than that I use charged water quite a bit in a similar manner to what you describe, based on my present goals whenever I feel a need to.