I have started (then stopped but started again) to do small resolution scans of each page on negatives. I use a flatbed scanner that takes 4 x 6 neg strips at a time so that part is quite quick. No after work is done on them as it is not necessary and transfer the results onto a memory stick with the main subject as a title for each file. I lable each page after scanning with a number and add that number into the corresponding file on the memory stick.
I have several thousands of negs, both B&W and colour to do, so it may, sorry, will take a while to complete. But already I have an easy record of what I take and it doesn't take long to find something I am looking for. An 8 gig stick will certainly take all my files with ease.