Setting up a trust, which YOU control till death is a good way to transfer wealth and avoid some inheritance and estate taxes, but mainly for the wealthy. Since most states and the federal government are quite lenient on how much property can be inherited before taxes kick in, for many people it's not worth it. Where it's increasingly used is where the parent doesn't want to use their own funds in a spend down during a long illness toward death, but prefers to leave that to their offspring while going onto the Medicaid rolls and making taxpayers foot the bill, and any medical payments that are due after death can't be collected on without managing to "bust the trust". States have various methods to deal with this, some have several years "look backs" on financial transactions which they have the power to undo. The federal govt also passed the Estate Recovery Act which allows them to take property to pay the govt back after death, and can force a sale on a home if the person is now single and they can't express a wish to return home in the future.
Some people use bank security boxes to put money in so their inheritors can get it afterwards. I suppose one could install a large heavy safe that is fixed in concrete floor in their home and relatives could open it after they were gone and distribute it without probate or record. The whole problem with the above is funds don't grow during that period time, although one could store the excess funds as gold coin bought at their cheapest such as Canadian maple leafs, or American Eagles. Kuggerands were popular for that at one time too.
Personally, I think the parents should have started distributing any excess wealth as "gifts" over the years as they were older, that way there is less at inheritance time, but even that can be problematic if gift forms were filed with the IRS over those years, since anything above 11,000 per year is charged against the amount allowed to be inherited free from taxes.
The biggest problem is for legacy property that produces income, such as real estate rentals, family owned farms, family owned businesses. Most of those would have already been incorporated, but shares transferred after death would still be counted as inheritance.
Basically, in my opinion, the governments, both federal and state, need to get over their socialist corruptions and quit taxing the dead who wish to pass on their and ancestor's life work to their inheritors, who actually are the ones who most deserve it.
This one tip will help you sleep better tonight
A few seconds are all you need to get a better night's rest.