Select2 Filter Widget

I have a bit over 70 brands currently and if you want to use the filter widget .. well, it takes the whole screen. Is it possible to have the Brands in a select 2?

Another option would be for the list to be aggregated based on the listed products. Let’s say I have 3 products in my search results, I don’t need all the brands listed in the filter, but only those of the listed products.

This might be too much of a request for a free plugin, so option 1 would suffice.

Thank you.