The image of the magician performing complex rituals using numerous tools is a popular one, but many people are less familiar with the wide range of ‘high magic’ rites using only the most simple and basic items, such as a glass off water.
The simple glass of water also has a long history of use as a gateway to the realms of other beings like angels and demons. Water – the stuff of life, and in many cultures a liminal space, be it at springs, wells, rivers, lakes, etc. During my research into the grimoires I have found examples for both angels and demons being conjured into a glass of water. The most recent of these I found when I was working on The Grimoire of Arthur Gauntlet, and I include it below as an example of these simple ‘high magic’ rites:
How to Call the Angels into A Glass of Water
You must have a urinal Or a Crystal Beer or wine Glass very clean washed Then filled iii  quarters full of Spring water Then cover it with a paper wherein must be drawn these lines and characters as you see in the figure following. Then having said your prayers devoutly to God for good success in what you undertake. If it be a urinal hold it betwixt your Hands so that your fingers hinder not the light. If it be a Glass you may let it stand on his foot. Then call as followeth. ~
+ Babell + Gabriel + Rochell + Sara + Isaac + Joseph + and + Jacob + I charge you by these holy names of God + Elo + Elo + Goby + Goby + Emanuell + Emanuell + Tetragrammaton + Tetragrammaton + As you shall answer before Jesus Christ at the great and dreadful day of Judgement for to show me all that I shall ask or demand faithfully and truly within this Glass without any delusion or dissimulation I charge you and command you and bind you that you come into this Glass & bring all that do belong unto you for to show me anything that I shall ask or desire that I may plainly behold it with my mortal Eyes.
 In this context a bottle.
 A similar technique is found in Sloane MS 3824, a contemporary MS. See The Book of Treasure Spirits, Rankine, 2009:156.