large ink pads for rubber stamping?

[bklyndoll.livejournal.com]

i bought a beautiful dragonfly stamp online and like a fool didn't pay attention to the abnormal size. it's 5.25 x 4 or something like that. needless to say i haven't found any stamp pads that size, not even at the place i bought the stamp. any ideas on how to ink the stamp 'n stuff or clues on where to go?

no doubt x-posted in various craft places - thanks in advance