I love your language around “curbing” chewing, rather than trying to eliminate it or reduce it– I like to view it as rabbits have 100% chew energy and we cannot decrease that 100%; only redirect it. Spaying/Neutering is likely the only thing that might decrease the overall “capacity”, but ultimately it’s still 100% and it needs to go towards something! Each rabbit is different and I’ve found what I offer, how I offer it, and where I offer it all have impacted how engaged my rabbits have been to the ‘toy’.
For the bar-chewing specifically, see here for some explanations and recommendation: https://wabbitwiki.com/wiki/Training_FAQ#My_rabbit_keeps_me_up_by_consistently_chewing_his_cage_bars._How_do_I_make_him_stop.3F … covering the wall with a bedsheet has worked very well for me (it’s actually my picture in the wiki page, haha)
For toys, again, it’s going to be some learning, which ultimately means probably some wasted money here-or-there while you experiment. I find most pre-packaged toys in the ept stores are not attractive for many rabbits. I suspect because they are overly processed/their fragrance just isn’t as appealing as more fresh sticks/leaves from small businesses you may find on Etsy, like the WellKeptRabbit or small independent businesses, like our Binkybunny.com store (see tab above).
Cardboard and fleece go a long way for my Fable: https://wabbitwiki.com/wiki/Training_FAQ#My_rabbit_keeps_me_up_by_consistently_chewing_his_cage_bars._How_do_I_make_him_stop.3F , https://www.reddit.com/r/Rabbits/comments/pae597/redirect_carpetdigging_energy/?utm_source=share&utm_medium=web2x&context=3 , https://www.reddit.com/r/Rabbits/comments/pkyue3/behavior_diggingadjusting_fleece_blankets/?utm_source=share&utm_medium=web2x&context=3
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.