New 20 ounce tumblers available now! Forum donation credit with purchase. https://www.wildguzzi.com/Products/products.htm#Tumbler
I never tried LEDs when I had Wixoms, but these should work: https://www.superbrightleds.com/moreinfo/bayonet-base-bulbs/ba9s-led-landscape-light-bulb-4-led-ba9s-retrofit/2538/#/attributes/13But, they might not last long either if vibration is what's killing the incandescent bulbs.