There are several synonyms for the term "functoid toolbox." For starters, you could refer to it as a "library of functions," which implies that it contains a collection of pre-built functions. Another option is to call it a "functional toolkit," which emphasizes the practical nature of the toolset. Alternatively, you could use the term "function repository," which gives the impression that it is a storage space for functions. Finally, you might describe it as a "function database," which highlights the fact that the toolkit contains a vast amount of function resources. Whatever term you choose, it's important to convey the idea that the functoid toolbox is a powerful resource for developers and programmers.