Common:
* Teapot
* Teacup
* Teaspoon
* Teabag
* Teacake
* Teaparty
* Tea room
* High tea
Less Common:
* Teacosy (a cover for a teapot)
* Teatime
* Teaset
* Tealeaf
* Teaberry (a type of plant)
* Teasel (a prickly plant)
* Teasdale (a surname)
* Teazle (a tool for raising the nap of cloth)
Figurative:
* Teachable (capable of being taught)
* Teachable moment (an opportunity to teach or learn something)
* Tease (to mock playfully)
* Teasing (playful mockery)
Humorous:
* Tea-riffic (a play on the word "terrific")
* Tea-rrifically (a play on the word "terrifically")
* Tea-mendous (a play on the word "tremendous")
Let me know if you'd like more examples or have a specific type of compound word in mind!