This is more than you asked for. Use what you can!
Tense (long) vowels, diphthongs: Lake, leaf, pine cone, cool brown soil.
pay day
deep freeze
dry rye
rowboat
blue moon
downtown
boys' toys
Lax (short) vowels: Fat pet pig got drunk -- took walk.
rat trap
red neck
chip dip
clock shop
mud hut
cookbook
chalk talk
R-colored vowels: Sharp thorns tear poor deer's fur.
(Technically, only the last of these is a vowel.)
hard heart
scoreboard
bear lair
poor Moor
weird beard
curse word
Lax-tense combinations.
a: clambake / crabcake
e: deadbeat / red meat
i: riptide / slip by / drip dry
o: potroast / oxbow
u: front pew / come true
oo: good food / pull through
(American English)