Donating a car gives you the opportunity to help those homeless and neglect children to have a home and be sheltered with people that will take care of them.
Find a inspiring old salvage door at your local antique store, salvage yard, thrift store or a yard or estate sale. Any regular passage door will work but the truly great project will have at its nucleus a multi-panel, chipped paint or interestingly detailed salvage door. Be sure the door is "solid core" which means that the entire door is solid wood rather than a "hollow core" which is basically a frame with outer skin of laminated wood and hollow in the center. A hollow core door will not give you places to secure the bench or structural integrity against the elements.
With a set of wood chisels for teeth the fish don't have much of a chance. I doubt if there is another predator around that would enjoy chewing through the thick end of a tree. Its vegetarian background gave it a pretty vicious set of tools to bring to the table.
In some cases, new parts can rarely be managed from the manufacturer and even too much costly. You can easily find a good replacement of new parts from your nearby
salvage yards near me. Some automotive parts remain in good condition even though the car is damaged. If you can manage your required parts from the junkyard, then it would save a huge from your budget.
auto parts sales is one of the largest industries in the world. Makes sense since almost everyone in the world has an automobile except maybe in underdeveloped countries. Some auto parts wear out rather quickly such as oil filters. Some last a little longer like brake shoes and pads. And then you have parts that thank goodness don't wear out very often at all like transmissions or cars would be impossible to maintain cost wise.
'Scrap my car', just think about it and go for it. Scrapping a car has become a very easy process now-a-days and can be done, believe me, just by pressing a few buttons on your computer. No, I am not implying that the computer will scrap your car for you, but it will certainly facilitate the process of doing it, without making you run around from place to place.