My cat has started bringing me socks and laying them in a perfect line every evening
That is cute and kinda odd I can picture a little sock trail turning into your cat's own hallway from laundry to desk.
Could be just a habit or comfort thing not a trend, socks are easy to grab so she makes a little route.
In my house my cat did something similar with laundry and it felt like a tiny nightly ritual.
If it keeps going you could try a simple fix like a dedicated toy path or a few extra blankets so she sticks to it and everyone stays happy.