Several mechanical gizmos and egyptian artefact sketches

This is for a project, where the character has sketched out some mechanical inventions, and some Egyptian artefacts. I have created placeholder sketches of these, but they now need better sketching/illustrating.

Due to the nature of the project, they require some very specific areas to be left blank. I have marked these in purple on one of the samples below. Beyond that, feel free to use your imagination!

As part of the project, the character sketching these will be in his sixties/seventies, so I have also included a sampler of the 'style' of sketching I'd ideally love to see.

They will need to be made as separate high definition transparent .png files.

I will pay extra for efficient and responsive service!