Use "next to nothing" in a sentence

1. A little seed weighs next to nothing and a tree weighs a lot, right?

2. 19 We knew next to nothing experimentally of the elementary properties of matter at such high temperatures.

3. The Crappy RV is a dilapidated motorhome which was damaged by the previous owner before being sold to Bob's RV Round-Up, where Cowboy Bob sold it for next to nothing