Wow, my mom’s side of the family is from Alberta, Canada, and they needed to do the very same thing! I believe I have an excellent and economical solution for you. There is a certain class of higher-wattage incandescent bulbs that will not be discontinued. These are called "rough service" bulbs. These have an extremely long life of 4,000 hours, compared to 750 hours for a standard incandescent bulb. These bulbs are also available in shatterproof versions, which is a very nice safety feature. The best thing is they are under a dollar each.