Cable Hip Adduction
this exercise is done using a cable but it may be posible to do this with one of your resistance bands if you can anchor one end safely.
Thigh Exercise Menu is a good list of assorted thigh
exercises all with animated examples of each. most need some form of equipment but if money is tight dumbels can be improvised by filling plastic containers with handles (eg 2 litre milk bottles) with sand to equal the weight you want to use.