Grandmas like railroads

Cut up the following words, choosing one from pile A and one from pile B. Create similes by comparing A to B.

A

house
pants
grandmother
letter
roof
telephone
raindrop
arithmetic
windshield
shame
light
abyss
stomach

B

boat
dance
forgiveness
line
pebble
finger
rest
chair
keyboard
railroad
turkey
breath
tree

Feel free to replace all or some of A or B with C that contains some ingredients from speculative fiction. Feel even freer to add your own. :-)

C

spirit
star ship captain
werewolf
alien ambassador
vampire
assassin
spell
time travel
apocalypse
artificial intelligence
love potion
wizard
telepathy

This is from The Aspiring Poet's Journal by Bernard Friot. (With list C added by me, of course.) It has 365 fun and creative poetic exercises for a whole Poetry Year.