My most recent idea is to buy hanging plants and display them on both ends of the roof of our garage. I was wondering if anyone can give me tips on the types of hanging plants that I can buy. It would be really nice if they are flowering plants. Thanks a lot!
Although its not altogether easy to know what to suggest as I'm not entirely sure of what type of climate you have where you are - as you can see from what others have already posted there is plenty of choice when in comes to plants that are suitable for summer hanging baskets.
However if you were looking for perennial plants that would give you pleasure all year round - there are hundreds of them too and with winter approaching - here are a few hardy perennials that are very definitely well worth considering
Trailing ivy - evergreen with plenty of variegated varieties to choose from
Any of the numerous variegated varieties of Helichrysum
Which both look really attractive when combined with winter flowering bulbs or cyclamen as in this picture
All Heuchera varieties - with hundreds and hundreds of different colors and foliage shapes to chose from - not forgetting the many Heucherella varieties too which also have just as many stunning color choices and even some trailing varieties too - such as
Copper Cascade
and of course Violas - many of which flower prolifically throughout the winter months
Viola Wittrockiana
or Viola Ochre