I recommend reading some of Pamela Morgan's posts about bitcoin inheritance:

What you are describing sounds to me a bit like a "family office" fund that happens to be invested in BTC, and you are looking for a relatively decentralized way for the family to manage custody of the BTC held in the fund. This might be an easily understandable way to introduce the idea to a lawyer if you seek council about this (and I recommend that you do -- I am not a lawyer).

Regarding wallet options, you could check out Nunchuk which is one of the easier-to-use multisig wallets and it is open-source which is nice from an auditability perspective. Electrum, Sparrow, and Specter are all good options as well but a bit more advanced usability-wise. Check them out and you can decide for yourself what is best for your situation. See also https://btcguide.github.io/ for general multisig tips.

Working on something. Watch my series with Will Cole if you're curious.

Man I am thinking about the same thing and have absolutely no clue or solution.

We want to create a Self Custody Multisig for my soon to be born daughter in a way that me, my wife, the goodmother and godfather pay into it but no one can get the money without the majority (basically without the godmother and godfather) to ensure that our child will get it when it will be 18 years or finishing university or something.

I haven't done this yet, but I'm currently thinking about setting up a 2/3 multisig with a couple family members. I don't have a ton of BTC, but it's at the point where I'm getting uncomfortable having a single point of failure.

Unless all family-members and potential heirs are fully adept at self-custody, strongly recommend paying for a collaborative custody service (until better solutions develop).

If you’re dead set on DIY without an outside third-party, consider a “poor man’s miltisig” (wallet with passphrase, a sort of 2-of-2 multisig). Because properly setting up, maintaining, and later reconstituting a multisig wallet are difficult and can lead to catestrophic loss.

POV: I’m an experienced probate lawyer and executor

Hardware wallet - look at open source, built from commonly-available components - Seed Signer (https://seedsigner.com). You can also buy it pre-assembled from them if you don't want to make it yourself, it's still cheaper than other wallets. (To buy a pre-assembled one, go to the bottom of this page - https://seedsigner.com/hardware/.

It's not advertised, of course, so you don't hear about it on podcasts, etc. But it's a very solid product, and has great support (very active and helpful group on Telegram). It's more in keeping with the ethos of Bitcoin, and at this point I don't trust most of the commercial wallets, especially Ledger.

And also there's the knowledge that every single time you hear about a hardware wallet on a podcast, etc - they've been compensated for advertising it. I'm not against compensation or advertising, but you need to keep that in mind when evaluating products.

Also - what about time-locking in this context? Haven't experimented myself, but it sounds interesting. There's this article - https://www.athena-alpha.com/time-locked-multisig/. Not sure it has to be multi-sig though, I don't think so.

This shit is not easy. Don't believe anyone has worked out a good solution yet.

Looking forward to hear what the stackers have for you in terms of potential set-ups.

Yes. My thoughts:

You'd better make sure that your family understands bitcoin first before doing something like this.