Effective Commercial Marketing

Marketing in the commercial real estate market is dull!  Our office covers a wide range of real estate needs:  residential, commercial, land, ranches, resort.  Mainly because of our clientel and where we are located.  But the commercial market is beginning to slow.  I've been looking for more marketing ideas, like thinking outside of the box to market property that's for sale or available space to lease.  We've come up with holding a version of residential open houses.  During the week, holding open a lease space, putting out the open house signs and banners, having refreshments and finger foods, and brochures to expose the general public of the availability of the space.  We open during the middle of the week, from 11:30am to 1:30pm to be available in the noon lunch hours for anyone who might be driving by on their lunch hour.  I've had only one commercial open house and had 10 people show to look at a lease space.  Most were realtors, one banker, and others.  But the lease space stayed on the market for only a week later after the open house before it was leased.  I don't know if the open house helped to lease it, but the exposure to the public and the 10 contacts may have been worth it.  Any other ideas for marketing commercial property would be welcomed.