Its not THAT expensive!

The actual plastic Diana adapter is about $20 - I'd rather make a few cuts on that than fork out for a proper Nikon-Pentax adapter.
The lenses can be had for $25. Its not a massive investment and while Im more than aware of the marketing hype, its just something I'd rather achieve straight out of the box (adapter mods aside) that starting to source older lenses, taking them apart and trying to fit them together in some way!
Guess Im currently more time poor than worrying about a few options in set up for under $100!

Dont worry, its not about to get more time on my camera than my limited primes!!!

And PS, Im gen X - I actually remember the plastic toy cameras and the weird wonderful accidents that could be had with them.