I've learned so much from this site, especially on the diy side for solving very specific challenges we face as ice fisherman. I thought I would try to contribute and hopefully help somebody else.
Lots of talk about ice fishing at night and using bells on tip ups and deadsticks. I thought I'd share a little diy setup that works for me.
Everybody has those double bell plastic clamps with the screw end that never fit on any pole you own. Plus not easy to take on and off in a hurry.
I ripped those apart by pulling the bell and spring off the plastic piece. Then went to the local craft store and found some alligator clips of the appropriate size. A few spins of the spring to attach it to the hole in the end of the alligator clip and you're good to go.
They clip onto almost anything including rod tips and tip up flag holders of all kinds. They also come off easily so you don't have to listen to them jingle while you fight the fish. Easy, cheap, effective.