There are a plethora of synonyms for the phrase "many things". Some alternatives include "numerous items," "a multitude of objects," "diverse array," "countless entities," and "multifarious items." Other possible synonyms could include "a variety of things," "a cornucopia of objects," "a multiplicity of items," and "an abundance of things." These synonyms can be useful when you want to avoid repetition or when you need to add a bit of diversity to your writing. Additionally, using alternative words may allow you to convey different nuances or shades of meaning. Ultimately, the key is to select the option that fits the context and tone of your writing.