The best way to hide a seed, perhaps, is by writing it on four post-its
Post-it A: first half of the seed
Post-it B: first half of the seed
Post-it C: second half of the seed
Post-it D: second half of the seed
Each of these will be saved on a separate safe place. All you need to remember is the location of either (A or B) and either (C or D) and that each note has half the seed.
You can for example give A to your parents and C to your brother, and you can even explain to them the scheme. They will not collude and steal your coins (God, I hope not) and if either of them lose their note (through theft or otherwise) it does not matter. You still have B and D. If something happens to you (meaning you die) they can inherit your coins if they both kept your notes.
A better way would be to use Shamir's secret sharing.
A python implementation used in Piper 1.08 is
https://github.com/rxl/secret-sharing/tree/2f412e012232f4b0cb779977a49898b2b71ce9aeA c implementation on debian and homebrew is SSSS
http://point-at-infinity.org/ssss/For example if your electrum hexadecimal seed is 'e1d03e5a9fb44a99690f4d07b8f66205' then your mnemonic is 'begun coffee nowhere grow spot angel king dude exist reality dragon check'
Entering the mnemonic into SSSS :
ssss-split -t 2 -n 4
Generating shares using a (2,4) scheme with dynamic security level.
Enter the secret, at most 128 ASCII characters: Using a 584 bit security level.
1-f63dc651d4acf14299074509712c2042c281f03466ee3f8d646ee8b73d82ca9301090b2fab129031a19d4c95ed43be84ce7bae4329319d4e3ece788367f1c8890566cc96aee6cd897e
2-5e2b7b637ae8dace1e142f4ef56444bfddd0010d53ba2b4a0c3803ca8d2cbeb7d167faa8a0b27c8af12cebf8837b23f261e2705ac2d56a1ce4ba0e6e2a197720ae8f7ba4023d877917
3-c626ef8d1f2b3c4a631af68c76a398eb28e0ae1a4089d8f72bf5a51e1d496d54614255d5a62dd8e3c1438923a693572004953a526476c72d529623caeebee247c82816b5998b410935
4-0e06010626608dd71032fbc1fdf48d45e373e37f391202c4dc95d531ec7056fe71ba19a6b7f3a5fc504fa5225f0a191f3ed1cc69151c84b95052e3b4b1c80873f95c15c15b8b12f9d2
Entering the mnemonic into halfmoon's script into python
>>> import secretsharing
>>> from secretsharing.shamir import Secret
>>> secret = Secret.from_printable_ascii("begun coffee nowhere grow spot angel king dude exist reality dragon check")
>>> shares = secret.split(2, 4)
>>> print shares
['01-1cb7f259376d969123383ca3dc779a20a768305f5f430189da3494c827517af3b14cbb504fe1ef423a9eea3c8f0e687f852347dd04bf5201942f53e9054f5b10818', '02-196fe4b26ea2125db227bf33653cb0b8f07ed52be7888720b1dc8c8c86b6aeba923b04f82a264908c6808e233360819e74bbf5452ac671c59e1f3259ad26445ce4d', '03-1627d70ba5d68e2a411741c2ee01c751399579f86fce0cb789848450e61be28173294ea0046aa2cf52623209d7b29abd6454a2ad50cd9189a80f10ca54fd2da9482', '04-12dfc964dd0b09f6d006c45276c6dde982ac1ec4f813924e612c7c154581164854179847deaefc95de43d5f07c04b3dc53ed501576d4b14db1feef3afcd416f5ab7']
Note these 2 implementations are not compatible, so you have to use the same one to combine the fragments back !