u/Forsaken_Lab_2666

I really want to crochet a patchwork blanket with different granny squares, with fun symbols or patterns that are somewhat significant to me. But i have concerns about using patterns from different creators that will result in granny squares of completely different sizes... does anyone know how to solve this problem, or a place I can find patterns for granny squares of the same size? I would prefer the patterns to be free or affordable, but I'm very open to paying more for good quality or unique patterns