Women on marches in the USA knitted simple hats, which are basically a short tube with a straight rather than shaped, top. When worn the top corners look like ears hence the name ‘pussy hat’.
The EU flag has a circle of 12 stars, represent ‘ unity, solidarity and harmony among the peoples of Europe ‘ according to the Europa.eu website. You might not be able to fit twelve stars on there (or even want to) and a few random yellow stars would look just as good. Here’s the Knitted stars which are just 48 short rows. Again, if you want to peruse other star patterns, try YouTube, above.
Here’s a pattern that supposedly anyone can knit with any yarn and it’s even shown in blue. Knit a one-row scarf and just add the stars.