Consider a regular collapsible tripod & a digital camera with manual aperture settings capability & disabling the flash.
Depending on the quality of the camera, it could be used in a fairly low light situation, otherwise you would have to have a light source. The manual setting of a small aperture (f/8) will provide a huge depth of focus (like a pin-hole camera) clarity with longer exposure times (2 to 8 seconds or automatic aperture priority) & possibly ISO settings (100 to 800 or automatic ISO). The use of an auto timer & the tripod will prevent motion blur during the long exposure times & improve image clarity.
Many cameras will not focus in low light situations, so you will need to do manual focusing in these cases, but the clarity should be fine if the camera focal length is within the tripod to subject matter distance.
If you already have a decent camera & tripod, you could see if this could work for you without any extra expenses. The size of even some bulky SLR cameras is not that huge either. All have their own battery source. The better ones have lithium rechargeable batteries.
Old computer TV show of The Lab with Leo Laporte from 2007 or so.