You want to compare the modern US military - which is exceedingly well supplied and primarily fighting counterinsurgency missions - to WW2 Germans. The guys who moved their supplies by horse cart and couldn’t find enough coats.
Setting booby traps is not something a person does when they are well supplied and taking offensive action. Booby traps (including IEDs) are laid by people who are on the defensive and don’t have anything better. If I’m given the choice between a factory-made antipersonnel mine and an improvised booby trap, I’m picking the factory model every time. Modern American “traps” are things like tripwire flares, claymores, and FASCAM.
The Wehrmacht probably didn’t use lots of traps or mines when they entered Poland or France. But I can definitely see it happening on the retreat from France or Russia. We’re talking about people who had to cannibalize their worst tank every day just to keep the other tanks functioning. The Germans never truly had access to 100% of what they would like to have, and when they ran out of mines they could not just fly in a new box.
FWIW, I’ve never heard much about conventional armies using improvised traps. It might happen if someone is isolated and in desperate circumstances… EG the end of ‘Saving Private Ryan.’ When I think “booby trap” I think of Vietnam, where communist insurgents had to improvise low-cost, low-risk traps for GIs, or the modern IED war.
If you look at the modern US conflicts, I’m not even sure when someone would have had a reason to use improvised traps. Our offensives in Iraq and Afghanistan are characterized by high speed and aggression. Things happen crazy fast and they were always on the move. If you are constantly moving and constantly on the offense, it doesn’t really make sense.
After the initial US offensives, we settled down into prolonged counterinsurgencies. At this point, we saw our troops living in massive, well-supplied bases. Running out of claymores was never a problem. And when would we even need to set booby-traps? Who would be the target? That only makes sense if you - for example - discovered an enemy supply cache or something. Usually they just exploit caches for fingerprints and the like.
Maybe one day we will be in a war where isolated troops are put in the defensive and must improvise traps for the enemy. In our current situation, I cannot imagine when that might happen. Air power and helicopters have essentially made it impossible for troops to be isolated without resupply for more than a few hours.