The websites Rentals and Rental Alaska is an excellent website to find information on weekend apartment rentals in Alaska and all around the U.S.
www.forleasebyowner.com is a good site to check. They have a lot of listings.
If someone in Alaska is interested in renting a boat they would be able to rent one at Rustic Retreat Rentals and Jensen's Boat Rentals. Both places offer different sized boats to rent.
Newspapers are a great souce to find home rentals. Many Real Estate companies have listings for home rentals as well. You can also inquire with rental property agencies to find home rentals in your area.
One can find listings for apartments in Boston online at ForRent, ApartmentGuide, and Rent. One can also look in the local newspaper for available rentals.
Www.forrent.com can give you a list of several rentals in the New York area.
Trip Advisor is a great place to look for all sorts of vacation rentals and reviews of the rentals. Flipkey also has listings for vacation rentals in Calgary. The Calgary Tourism Bureau could also provide a listing of some rentals.
It looks like there are many options for vehicle rentals in Alaska. The following are some good options: www.rentawreck.com/car-rental-alaska.html, www.continentalvan.com/alaska, budgettruck.com and http://www.abcmotorhome.com/. Several offer airport pickup.
The best place to find generator rentals is in your local phone book under the yellow page listings for generator rentals. If necessary you could also phone information in order to obtain a local listing under generator rentals.
There are many different places to find home rentals for the Provo, UT area. If looking online, you can find trusted rentals through this website: http://www.rentals.com/Utah/Provo/.
miami.olx.com has rentals for houses and appartments. They do list some duplexes. Your best bet for rentals in Miami is to check private listings on Craigslist. This generally includes listings for apartments, houses, and duplexes for rent. See here -- http://miami.craigslist.org/
Weekly rentals for summer homes can be found by looking at looking listings in the area of interest. Additionally, it may useful to use online services such as Kayak to find price comparisons.