problem with booby traps aside from being indiscriminate is you will be legally liable for killing someone with one when society gets back together....you could do something like string treble hooks between trees on fishing line...mine have some liability for that but they wouldn't be dead and...
no such thing as a fixed emplacement that can not be overrun with sufficient numbers...if they know you are there and they want you bad enough they will keep coming back with more people until they get to you...
if you think only black people are going to come after you when tshtf you will be wrong...anybody who didn't prepare is going to come after you if they think you have something to come after...and they will be about 80-90% of the population...possibly including people you know...
your best bet is to make your house look like it has already been hit...front door open/busted...break out some windows from the outside, don't just break a few panes i mean really mess things up...defend from inside (preferably with suppressed weapons and subsonic ammo so you don't draw more...