Lighted interiors on both first floor and upper floors
Lighted exterior business sign
Several figures on both first and upper floors
Custom painted exteriors
Roof Details
I usually use DPM or Smalltown Kits for most of my business buildings
Kits from City Classics(West End Market) and California Model(Ed's Market & Your Hobby Shop) are used for most of my grocery stores.
I now use LEDs to light my buildings' interiors, exteriors, and signs. It gives long lasting bright interiors and signs without the threat of overheating.
The resistor in the building does get hot and care must be taken to keep resistor clear of the plastic or details.