i'd say your equipment is more important than materials. the materials for fresh pasta is basically just eggs and flour, maybe some water/salt, i dunno
equipment would be like a pasta roller, although you could probably just use a rolling pin and cut to size after your fresh pasta dough is ready
your options for filling are really endless. multi-cheese fillings, of course. meats like ground beef/lamb/whatever shit you are doing. veggies like butternut squash fillings, mushroom stuff, some kind of bell pepper shit, i dunno. seafood fillings like shrimp or mashed white fish
you can combine those w/ any kind of sauces. brown butter sauces, alfredo, cream sauces, regular marinara
i'd say for making your own ravioli style pastas, more important would be to just not overstuff your pasta than what you really put in it
i've never really looked for it, so i dunno how many places would sell just sheets of unstuffed pasta that is already prepared and rdy to stuff. if you're willing to make your own stuffings, i'd honestly just think it'd be worth making your own pasta. you really just need the flour/eggs and a place to combine it by hand on a counter. then just roll it out