The bar behind the seats is known as a T bar, hence the name. At least, I assume that's how it came about.
In terms of monetary support, we used to have a Donate button but I think it's been removed temporarily. Hopefully, it will be back someday.
In the meantime, if you buy anything off eBay, we have a link in the toolbar above the editing window marked, funnily enough eBay. If you click that and insert the item number you're buying between the start and end tags ie. [ ebay ] item number [ \ ebay ], we get a kick back from eBay
There is a page full of eBay purchases on it but you don't have to use that particularly.
Sorry if this doesn't make much sense - it's a lot easier than trying to describe it!