A different approach is to redefine "tweek".
Used to be tweeks were things one could do for free or nearly free that improved ones listening experience, now, most tweeks are packaged, pimped, and overpriced.
I really cannot see the value of most of these prepackaged things, as some other thing, (that is nearly free) will work just as well.
This 'comment' is in regard to footers, cones, shelves, bags, dampening devices, unused RCA jacks covers, etc. (and NOT in regard to cables, which are a whole different ball game, but also have home-made variations that are inexpensive and sound great)