I’d recommend getting one of these as well in case someone in your family gets ahold of the key to the steering wheel lock. Put the code to something you remember but they wouldn’t know (I usually use part of my old locker combination for things like that).
As others have posted you can get a cheap $10-$15 retractable cable lock. The cable is like the thickness of a bicycle brake cable.
I personally got a cheap cable lock similar to the one below. But I got it from the dollar store for $2. I think mine is only 3 feet long so it's a bit lighter.
Master Lock Cable Lock, Set Your Own Combination Bike Lock, 6 ft. Long, 8114D https://www.amazon.ca/dp/B000BD69IS/ref=cm_sw_r_cp_apan_glt_i_19JCFRJJ9PM6E31B72QM