Athena very frequently runs into things. I'm not sure if it's because she's cross-eyed so has a hard time judging distance/where things are, or if she's just clumsy. My boyfriend jokes that she's not very good at being a cat.
Last night he threw a paper ball for her across the room since she wanted to play fetch. She tried to leap from the couch over
the coffee table, but instead smacked right into the corner of the coffee table.
Often she'll try to jump onto things and misjudge the jump and smack into the side or edge of them instead. Or she'll be on the bed, leaping about as she plays with something, not watching where she's leaping, and then accidentally leap off the bed not realizing there's nothing below her. It reminds me of those old Wile E Coyote cartoons where he runs off the cliff and then pauses in midair, looks down, and falls scrambling.
Also almost every night when she's zooming around the condo, she runs into the mirror at least once (our closet has big sliding mirror doors on it). Face first. I'm not sure if she just thinks the reflection of the carpet means the room continues, or if she's just not paying attention. We always here this scrambling as she's running about, followed by a loud "thump" and then a minute or two of sneezing.
Hopefully she seems to have a thick skull! I have considered just wrapping her with bubble wrap or making her wear a helmet.