When you want to talk about something being done on a small scale, you can use a variety of synonyms depending on the context. For instance, you may say the project was carried out on a limited scope, a restricted level, or a modest size. You can also describe something as being done in miniature, on a minor level, or at a basic scale. When discussing activities or businesses, you may choose to use phrases such as on a local level, within a particular community, or in a niche market. Ultimately, using synonyms for "on a small scale" can help to provide clarity and precision in communication, particularly when discussing matters relating to size and scope.