Car keys (bulky) or house key?

I carry a set in my purse.

If a purse is not an option, then I'd look at "man bags" and travel security products. These at REI focus on waist and neck wallets but I think there are also lower leg options elsewhere.

https://www.rei.com/c/wallets-and-money-belts?r=c&pagesize=90&ir=category%3Awallets-and-money-belts&page=1

Here's a wallet for wearing on the lower leg:

https://www.amazon.com/Eagle-Creek-Undercover-Leg-Wallet/dp/B0054IHBLY


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