Trash is great. You don't want to use trash to secure your boat though! Don't use trashy duct tape or old rusty nails to secure your boat! Buy new or steal from your parents! We used Gorilla Glue Duct Tape - its the strongest thing i have ever seen (besides Allen's biceps!) We also used those cool straps with buckles. You may also want to seal up any holes you might find. the "pontoons" you see in these pics are actually old containers (maybe for oil?) and one had a hole in it. We didn't realize this until it started to sink. Its a good thing I was tied to good old terra firma with such a sturdy line!
We are realizing that paddles must be made. Remember kids: don't buy 'em - make 'em! Old brooms or rakes make great handles. We might even make some sort of paddle boat design... this might take some good old fashioned Allen ingenuity! We call it STREET KNOWLEDGE!!!