I bought a wax heater from Aldi a few years ago and these were the only replacement bulbs (this was the third set I tried) that worked and were big enough and bright enough to melt the wax.
12 Pack MR16 LED Bulbs 50W Halogen Equivalent - 5W GU5.3 4000K Neutral White Non-Dimmable 45 Degree Beam Angle For Landscape, Recessed & Track Lighting
39 Review
6 Pack ST58 Antique LED Edison Bulbs 60W Equivalent, 2700K Warm White, 95+ CRI Non-Dimmable E26 Medium Base Vintage LED Filament Light Bulbs
34 Review
Geeni Prisma Drop BR30 LED Smart Light Bulb, Tunable & Dimmable RGBW Wifi Bulb, 2700K-6500K Color Temperature Range, No Hub Required, Compatible With Alexa & Google Assistant (1 Pack)
32 Review
Ultra Warm White LED Mini Globe Light Bulb With E26 Screw Base - 1W Energy-Saving Equivalent To 10W Incandescent Bulb - G40 Low Watt Edison LED Bulb - 2200K Warm White Light
31 Review
Luminescent lamp Camelion 11066 ultraviolet, E27, 26 W
12 Review
Set Of 4 Geeni Prisma Wi-Fi Multicolor LED Light Bulbs, 1050 Lumens, 2700K, Dimmable, No Hub Required, Compatible With Alexa And Google Assistant, 75-Watt Equivalent
41 Review
E12 T22 Low Voltage Edison Bulb LED 12V-24V Vintage Tubular Night Light Bulb 1W 100 Lumen LED Candelabra Light Bulb 2700K 10W Equivalent Small Filament Bulb For RV,Out Door String Lights, Pack Of 25
15 Review
Lamp LED Ergolux 13638, E27, A60, 15 W, 4500 K
12 Review