In the beginning, Tyson felt most comfortable working with acrylic paint on found cardboard. Perhaps he liked the easy accessibility of the materials, perhaps he was afraid to make his work permanent...more likely he was just starting out as an artist and didn't have the coin for fancy supplies.
Nowadays Tyson still uses acrylic, but has also broadened his scope of materials to include watercolour, india ink, resin and yes...coffee. This may or may not have come about due to the fact that he likes to drink coffee while working, and often places his coffee cup next to his rinsing cup. Who knows.
As far as surfaces go, Tyson has moved on from the cardboard, but will pretty much paint anything he can get his hands on. Paper, canvas and wood are staples, but he's been known to attack such things as skateboards, old records, matryoshkas, shoes...even a ukelele.
For images of much of Tysons work, see the drop down menu for the various categories.