I did not find suction cups.
I did find the outdoor timer and extension cord.
They were not with the Christmas lights as Roper suggested. They were on top of a box of misc. stuff that was waiting to be sorted and put away.
Unfortunately, today is too rainy and chilly to put out my inflatable grim reaper.
I have short circuited the finding-something-else process today by borrowing a couple of suction cups from the girls' bath toys to hang the ghosts.
But it was fun while it lasted.