Lehigh is great for engineering + business (either or both https://ibe.lehigh.edu/ ) and it’s probably big enough that it wouldn’t have that “I wouldn’t fit at an LAC” feel to it. If you want to bring your artistic side into it, there are also art and design programs, and multiple ways to combine these with engineering or business. (For example, mechanical engineering and product design.)
Bucknell and Lafayette are smaller but still not tiny, and worth a look.
This Carnegie Mellon press release is from earlier this year: New Program Integrates Engineering and Business Degrees � Tepper is a top business school, particularly good for STEM/quantitative-oriented students.