Heres a suggestion for you, go to a Home Depot and or a Lowes or even a Menards store or really any store that sells Plexi- glass. Go to the Plexi-Glass section and look at the glues there. There probley will be a couple three different glues there. Read the labels on all and decide which one would best suit your needs, or the easiest on for you to use.
When I built my trailer, I used the tube glue that they offer, worked just great, dries crystal clear and it has all the stickum that you need. In fact I have built several different things using that pertickler glue. If you use it for anything thats not really clear, be sure to test it on a piece of scrap first.
I keep a camera in the wife's car, that way when we're out, if I see something that I like, I take several pictures of it. When I get home I put the pictures in the computer, print them out and put them in a ring binder and when I am ready to start a new project, I go thru the pictures and see if there is anything that could or will be used on the project.
Both of my sons also use these pictures before they start new projects. I just wish that they would return the binders, so I wouldn't have to track them down when I am ready to use them.