Ozel the Wizard series:

Apprentice Quest (Ozel the Wizard Book 1)

Journeyman's Trial (Ozel the Wizard Book 2)

Wizard's Resolve (Ozel the Wizard Book 3)

 Santa vs. Krampus series:

Santa vs. Krampus

Santa Suits (Santa vs. Krampus Book 2)

Battle for ATL (Santa vs. Krampus Book 3)

Forest Justus (Santa vs. Krampus Book 4)

Dangerous Dan

Hearts Racing

Hammer Therapy: Thor's Journey into Analysis (A Ten Thousand Gods Short)

Ten Thousand Gods

Travel

How To Mount Kilimanjaro: A Mostly Serious Guide to Climbing Africa's Highest Mountain (Mostly Serious Guides)

Cobbled Together: The Paris-Roubaix Challenge and Beers from Kent to Ghent

How To Mount Aconcagua: A Mostly Serious Guide to Climbing the Tallest Mountain Outside the Himalayas