…that will accomodate thick things like remote car door openers, the little (but, again, thick) EZ charge electronic gizmos at gasoline pumps, car keys with thick “handles” or whatever they’re called.
The problem is, it’s hard to add these (and other) things to a standard key ring like so…
Just go down to your local hardware store and get a large size split ring keyring.
There’s usually a display of them in various sizes near the key cutting machine. There’ll usually be sizes from maybe 3/4" to 2". If you get a big enough one, it’ll do fine with all of your keys and gizmos. If you want some novelty tag (like the leather Porsche tag in the link), just pull it off the Porsche ring and put it on the bitter ring.
Here’s an example, though most local hardware stores have them an open peg display, not on individual cards.
I have a Tumi keyfob that holds a remote control, several club card thingys and some keys and on the other end is the valet attachment that can snap off to hold my bulky remote car key. So I take that one off when I’m driving the car so I don’t have to carry all that weight while driving.
This is the model I have and so far so good. I am happy with it. The key fob closes with my remote inside it and all the keys and I leave my car key out. On the back it has a slot to hold cards or whatever.