Heating for small spiderlings (1-3cm)

[IEatSand]

Hey all, I was wondering the best way to heat small spiderlings around 1-3cm in size. My Brazilian white knee unfortunately passed recently but I got her as an adult so I'm not sure how to heat spiderlings. I'll either be keeping them in the small pill containers or 9cmx9cm enclosures depending on how big they are, any tips?

 

[octanejunkie]

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[Tarantulafeets]

I don't find a need to heat them unless where you live is really really cold. They do fine in room temperature, but if you are in need of heat, a space heater should work fine.