Sundays, in my mind, are best spent sleeping in late and dedicating an afternoon to looking at random things you cannot possibly hope to (and would never truly wish to) afford. Toys are a good candidate, given the absurd asking prices for the highest-quality figures and statues.
By the end of the marathon, your eyes will sting, and you'll have been at it long enough that your desire to impulse buy will have parted. Well, hopefully. If you want to play it safe, simply look at stuff that isn't for sale -- like this awesome Doom army made out of Warhammer 40,000 figures.
As much as I dig the Cacodemons here, I have to give props for the keycards. What a nice touch.