How can you reuse 44 oz. styrofoam cups?

Here is one idea: https://www.hometalk.com/diy/decorate/rooms/wonky-foam-cup-vases-9378693

Wonky Foam Cup Vases

Hi there,

Use filled with soil for plants/seeds. Pile them up side down and make table legs with a pot of some kind they could always be stuck inside each other for strength and stability. Paint or finish as desired. Smaller versions could be used as Plant Stands. You could also make a what not stand if you filled them with cement or plaster of paris using the same principle and maybe a stick or wire etc through the legs ............A circular base can also be achieved by taping cups together, or sticking them on to a base and having a smaller or larger board on top........

How about chandelier,lamp shades https://www.google.com/search?q=styrofoam+cup+chandelier&rlz=1C1CHBF_enUS750US750&oq=styrofoam+cup+chandelier&aqs=chrome..69i57.13297j1j7&sourceid=chrome&ie=UTF-8 how to https://www.youtube.com/watch?v=sCrOYq9m0y4 more https://www.apartmenttherapy.com/look-styrofoam-chandelier-2638 more https://www.google.com/search?q=styrofoam+cup+chandelier&safe=active&tbm=isch&tbs=rimg:CegdylyDbUvtIjgCNa0KZowY6PEBng1Xr5ijuo7XXRvnipec7h_1qFYfkdEsuXR0cYu9Q9JqRu41asogJIU-qsAXhByoSCQI1rQpmjBjoEd0XdvXG9WG2KhIJ8QGeDVevmKMRlpogvuav07YqEgm6jtddG-eKlxHFgYGGDvfoJSoSCZzuH-oVh-R0ETLMl4IhfJH5KhIJSy5dHRxi71ARdynBVyLP3WwqEgn0mpG7jVqyiBF3KcFXIs_1dbCoSCQkhT6qwBeEHEVp0KvOG0AjL&tbo=u&sa=X&ved=2ahUKEwjMlJGtx_LfAhUKjFQKHfZZDgMQ9C96BAgBEBs&biw=1366&bih=626&dpr=1

How many is 'a lot'?

Donate them to an elementary school. Teachers will put them to good use for arts and craft projects with students. More often than not, there is just no budget for these kinds of resources.