Our Planta greenhouse gives us a jump on spring growing by letting us grow veggies and flower starts. Nice to have your own fresh food when the snow flies.
Weirdly the thing I get the biggest kick out of is the spices. I have an entire flat of cumin started. Last year I made my own Taco seasoning. The family thinks it comes from Costco.
The greenhouse was an anniversary present for my wife. She has always wanted one. We live in the inland northwest and the weather here can be very temperamental, you get cold snaps late into May, which makes it hard to grow things outside.