i sort of refer to it as a mini explortorium. you can go in there and buy really unique gifts. it also has the world's largest marble run, which is actually done with a bowling ball. >> leslie hansen is the owner of oddysea. as a newcomer to main street, she clearly understands how important it is to support this special community. >> this year our pumpkins we got from farmer john. we bank at the bank up the street. my insurance company is on main street. i work a lot with the half moon bay review. anywhere i can be supportive of other local businesses, i am. >> if anyone asked you what you were doing when you were 20, would you remember? maybe you were in college. maybe you were holding down a full-time job. in south dakota, there's one 20-year-old juggling term papers and exams with city council meetings. he's a south dakota state university student and he doubles as the local main street manager who has helped bring downtown in his hometown back to life. >> still in school? how old are you now? that kind of stuff. what age are you? can you drink? you get all of it. >> elliot