Rigging organic creatures
For when you really need a dune dragon to eat someone

Here's the idea: you can inject or somehow otherwise implant living creatures with a chip or a set of nanos or something that give you control over them, thus allowing Mix riggers to have dune dragons, scorpions etc at their command, probably in a weaker form.

It could be illegal tech and hard to obtain. Bonus if you can use it on people too to temporarily puppet them.