What do Mechs and Jetpacks have in common? They're both in this pack! Yes they are! They both can be driven around? Yep. Flown/driven, sure. They both have pixels. YES they do! Wow, these things are more similar than I thought.
Get all of these particular items from your local armorer. Yes. they've been going to Advanced Armorer School, obtained their Diploma Of Advanced Armorer-Type Things IV. Well, some of them have, good luck with yours! They're all top-level trades, so place down a lot of Blast Furnaces in your village, grow lots of villagers, and trade up all the armorers. Patience (as with most things) is key!

Disclaimer: This is an unofficial app for Minecraft Pocket Edition. This app is not affiliated in any way with Mojang AB. The name, brand and assets are the property of Mojang AB or its respectful owner.