Add sample seed backup configurations

Author: ramontayag

_pages/backup-wallet/seeds-advanced.md

@@ -74,3 +74,33 @@ Place your paper into a plastic bag with a good seal (vacuum sealed even better)
 
 #### Fireproof Document Bag
 You can use these to protect seed backups, and also to protect your physical hardware wallets.
+
+## Example Backup Configuration
+
+| Wallet | 2 of 3                        | 3 of 5                        |
+|--------|-------------------------------|-------------------------------|
+| #1     | Safe at home                  | Safe at home                  |
+| #2     | Bank or trusted friend/family | Safe at home                  |
+| #3     | Bank or trusted friend/family | Bank or trusted friend/family |
+| #4     | -                             | Bank or trusted friend/family |
+| #5     | -                             | Bank or trusted friend/family |
+
+### Items to include with each wallet
+- With each wallet, include the following:
+  - the wallet's seed, on paper or metal
+  - all the wallets' master public keys[^1] (xpub), on paper
+  - in a storage medium (i.e. SD card, thumb drive):
+    - current version of bitcoin core (all platforms)
+    - current version of Specter Desktop (all platforms)
+    - in a plain text document (.txt or .md), all the wallet's master public keys again, for easier access
+    - plain text document including spending instructions
+- Place everything in a fireproof document bag
+
+#### Checklist
+- If storing in a bank, choose different banks, definitely different branches
+- If wallets 4 & 5 are with trusted friends/family, in the event you want your heirs to access your bitcoin, ensure that they will be able to get a hold of the wallet in a safety deposit box or at home.
+- If all other wallets not with your at home are in safety deposit boxes, then ensure that your heirs can access the wallets at home when needed, and that the banks will give them access to the wallets as well. The reason for this is if one of the banks isn't able to give them access, and they can't get access to the wallets in your home, then your heirs will lose access to the bitcoin.
+- Every year or two, check your devices and seeds to ensure they are still intact. Put this on your calendar so you do not forget. There can be floods, paper can corrode, devices can break, or bank could have lost your stuff. Since this is a 2 of 3, you can lose access to one of the keys, but if you lose access to 2 of the keys, you can no longer spend from the wallet.
+- Look years ahead. If the amount of bitcoin you have calls for it, you may want to have the seeds in safety deposit boxes or with friends/family in other cities, or possibly even other countries (though this will make checking on them much harder).
+
+[^1]: There's a privacy tradeoff here. People with access to this can find out how much your multisig setup contains.