This is a great project for a quick gift, made entirely from materials you already have at home. Its a perfect DIY activity for the kids to help with, too.
Start with a pretty empty jar, cleaned and with the label removed. Today I've used a small salsa jar; tall narrow olive jars work beautifully too.
Fill the bottom of the jar with rocks. This provides drainage for your terrarium, helping keep the roots healthy.
Next, fill the jar with high-quality potting soil.
Then choose a plant cutting and place it in the soil. Here I've used a small Jade Succulent cutting that is a little too small for the jar right now, but which will grow quickly.
For a great hostess gift try using herb cuttings in your terrarium, like basil or rosemary, which are simple to propagate. To learn how, check out my post about basil propagation: How to Grow Basil from Cuttings