The DIY starter kit, a springtail culture and a mist spray bottle, sold together at a small saving compared with buying them separately. It is a complete start for a closed terrarium.
The springtail culture adds a clean-up step to the build, and the mist bottle makes light misting easy. It suits someone who wants everything in one order. Buying the three items together means one order covers the full start, from the jar and plants to the mist bottle and springtails.