“Altars to Mercury can include skeleton keys, stimulants, and other items having to do with communication and getting from one point to another. Good offerings for Mercury include candy, cigarettes, sweetened coffee, various alcohols and coins. Volunteering or donating money to causes that benefit learning, communication, and children’s learning specifically, are excellent planetary charity for the Mercurial sphere, especially on Wednesdays and during Mercury’s hour.” - https://www.wellbeing.com.au/mind-spirit/astrology/astrological-magic-beginners-guide.html
Meditating with Mercury in mind is an excellent way to channel Mercurial energy into your being prior to important events such as contract signings, presentations, travelling and any other matters involving commerce.