Blump, while a $400,000 toy collection is pretty sweet, no self respecting chick is going to think it is cool to tell her friends that her bf has a $400,000 toy collection. Sell it and invest it. When finances come up in conversation, you will sound a whole lot better talking about your investments in the stock market than in the toy market.
Save your favorite 20 and sell the rest (since I am sure there is no way you will sell them all).