There are many styles of tortilla warms commercially available.
Woven Basket - The simplest is a simple basket with lid. Wrap the tortillas in a small kitchen towel then place in the basket.
Plastic-Resin Insulated Warmers - These heavy plastic warmers are insulated and do a good job of keeping tortillas warm. Just place the heated tortillas in the warmer and cover with the lid.
Palm Covered Styrofoam Warmers - These warmers are popular in Mexico. The core is styrofoam with an exterior of woven palm. The lids are usually hand painted with colorful designs. Most of the palm products have been replaced by plastic.