Instead of storing entropy, store the mnemonic created with the entropy. Steganography may very well be advantageous when storing the mnemonic. The random mnemonic generator on this site uses a cryptographically safe random number generator. The inbuilt random generator can generally be trusted over your own personal intuition about randomness. https://social40.com/story4270387/the-definitive-guide-to-bip39-seed-phrase