A free night is not a lesser night. What makes an evening feel planned is that one of you decided it, ahead of time, and the other did not have to. Here are kinds of evening that need no budget.
A walk with a destination
Pick one small thing to end at (a dessert, a view, a bench) and walk there the long way. The destination is the plan; the walk is the date.
A browse with a rule
Go somewhere you can wander, such as a bookshop, a record shop or a gallery, and each pick one thing you would give the other. No buying required.
Dinner from what is in the kitchen, with a theme
Choose a country, a colour or a decade. The theme does the work that a reservation usually does.
A market, with a coin
Walk a market and let a coin flip decide every turn. You will end up somewhere you did not choose, which is the point.
An evening that starts at sunset
Time it to the sky instead of the clock. It turns an ordinary hour into an occasion.
On a free unplan plan, we do this for you: a sealed idea every week from at-home and low-cost options, with nothing to decide.