An edible bouquet...there are a lot of different versions and they are generally made out of fruit or candy.
having unusually read the few answers there before answering (I usually do the opposite and answer before reading other posts)
i would have to say a year's food supply for their dogs, but that might be too expensive ^_^ mother probably needs a day at the spa or even just stuff to help her relax and care for herself so she can renew her energy to care for others. the man, i'm not certain. i'm surrounded by men who aren't the usual type... sporting item or big screen tv or video games if he likes those i guess... you'd know what he likes more than i would lol
the teenage girls... again there you would know more about what they like than i would but concert tickets or music gift certificates, maybe... take a look at the things they like and do, some love books some don't, go with the things they seem to like.
a day at the movies?
I would think that tickets to a sporting event or concert would be fun!
Parents - blankets
Daughters - latest mobiles/tabs
a puppy, they need homes