Had a group that would play DnD 3.5, where you need to roll to confirm crits (20 auto hits, roll again against AC to crit). We ended up rolling to confirm fumbles as well because catastrophic failure doesn’t just happen 5% of the time. Imagine 5% of your army accidentally chopping their foot off or beheading their nearest kinsman every few seconds.
A little late for a reply, but I use stainless steel 16-14 gauge rings made for chainmail and use pliers to bend them open and closed. The Ring Lord is where I get my material for projects, and then I just use the rings for keychain stuff too.