Yes, I save charms until the right bag comes along. I have more charms than bags!
I don't care for the dogleash clips on most charms because they tend to make them hang at an odd angle.
Many of my charms are attached to my bags with rings. Sometimes I go through a hardware ring, sometimes I encircle the entire strap or handle. Here are some examples.
The first one is an antiqued brass ring I got from a craft store. It opens like a binder ring.
The second one is also from a craft store.
The third one, the frog, is the type of D ring that
Coach used on many vintage bags, including Willis. Mine was given to me by a Coach SA, but you can buy them on ebay.
https://www.ebay.com/itm/Two-Replac...efcase-/321098997426?var=&hash=item76c4e248fe
The fourth one, the fox, was purchased on ebay. It is called a spring gate ring.
https://www.ebay.com/itm/Snap-Clip-...4341a193b:m:mORwWa2-p_uAAE_MWCcOptg:rk:1:pf:0 I'm not recommending this seller, just showing you what to look for.
The fifth one, the pink bag, uses the same D ring as the third.
The last one, the blue Rambler's Legacy, shows a binder ring, also called book ring, wrapped around the strap.
https://www.amazon.com/Richards-Company-2-Inch-Diameter-SPR01438/dp/B0057JA1QC/ref=sr_1_3?ie=UTF8&qid=1548437860&sr=8-3&keywords=book+rings+1+1/2+inch&th=1