Look for rough service bulbs. They will be 130v so when plugged into 120v they will be approx 25% less wattage and light.
Just mail order them. If they're not on Amazon US then just order them from Amazon Canada, or failing that Alibaba. Still plenty of 100w rough service bulbs in Canada.
(Skip the coated ones, you don't need those. Just get the regular kind.)
Another option would be to get G9 (or similar) to Edison adapters, but then you'd have to buy the adapters. Those would be 120v though.