I freeze mint in ice cubes and also make apple mint jelly which lasts us through the year.
kircubbin I use mint as a condiment, classically with lamb but also with cheese dishes such as halloumi. It’s great finely chopped with couscous and cucumber. I put coriander in with that too.
In the Summer we always have a jug of water in the fridge with mint sprigs, and sometimes cucumber slices, in it. Mint tea is also a Summer favourite, so refreshing and cheap.
Basil classically goes with tomatoes, both raw and in tomato sauce.
Herbs are endlessly useful. A pot from the supermarket will grow like any house plant if you just use a little bit at a time.