Simple Compound Words:
* breadcrumb
* chessboard
* featherbed
* freshwater
* headache
* hedgehog
* lemonade
* letterbox
* peppermint
* shelflife
* shoeshine
* steeple
* sweetheart
* teacup
* thumbtack
* waterfall
More Complex Compound Words:
* bedside table
* blueberry
* breakfast cereal
* checkbook
* crossword
* deadline
* doorknob
* downstairs
* firefly
* freshman
* grandfather
* greenhouse
* handmade
* headphones
* homework
* mailbox
* necklace
* outdoors
* rainbow
* seashell
* snowflake
* stepladder
* sunbeam
* thunderstorm
* toothbrush
* underwear
* upstairs
* weekday
* windshield
* woodpecker
Note: This list is not exhaustive, and there are many other compound words that contain the short "e" sound.