I can't decide whether to use the term cutlery (mainly UK) or silverware (mainly US). They're both inaccurate, especially when asking for plastic/disposable versions.
If it includes a knife then "cutlery" seems accurate? Sometimes I'll just make a compound of the items "spoons-and-forks" (when it's pasta for tea [tea meaning evening meal where I come from]).
This is actually the one I've always jumped to (in the US). "Silverware" and "cutlery" have always had a fancy restaurant vibe, rather than a be a word for an everyday object.