Most things we do cost money, so most alternatives to drinking will cost money.
I’ll throw another vote in for fixing up the bike and doing some riding. I’m thinking about doing that myself. You don’t have to put much money into a bike to keep it going.
I’ve found the best way for me to keep busy without spending money is to work more. This works well for the women in your lives to. If they’re at work they’re not out shopping.