I'm a bit late, but I have OCD too and it definitely affects silly things in my daily life.
The most obnoxious thing that it makes me do is whenever I read a digital clock, I always need to read the time backwards, then forwards, then forwards again, and then backwards again. If the time changes while I do this then I need to start over. Also, if I watch a video and I see the video length, I need to do the same process. If I pause the video and the length that I've been watching it ends in 5, then I play the video for another second so it won't end in 5 when I pause it.
If I get really bad intrusive thoughts I've found that lying under my weighted blanket really helps to calm me down. Grinding in Fire Emblem or Persona also helps me with this because of the repetition.