A buddy had some nice crumble that he shared with me. He showed me how to build a really decent cheap rig that doesn't require an actual blowtorch, either. I plan to build one just like his. Really simple.
$30 dome rig:
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$10 TINY titanium dome nail:
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$5 triple flame lighter:
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Since the nail is so small, you don't need much of a torch to heat it up red hot. This is almost exactly what he was using and it worked perfectly.
It will work well for me when I start buying concentrates, as I needed something inexpensive that is stealthy (as in doesn't require a blowtorch. lmao)