I have a number of what can be described as 'research' based interests that could be seen as geeky.
Throughout my life I have spent time using the internet to delve into understand specific topics simply for pleasure.
These includes include airline travel classes, airport design, company logos, general facts and figures, infographics, mcdonalds differences worldwide, numbers, restaurant menus, road maps. road signs, telephone numbers, television idents, train journey videos, train livery and units of measure.
I find these interests both calming and relaxing to investigate and explore.