I use hotmelt adhesive a lot in my shop. Never as a permanent solution, but as a clamp, extra hand, for something fast. And for making 1/8" x 3" strip luan templates.
I bought some 3M TC guns about 25 years ago, and short of a replacement tip, they're still in service in my old business.
I wanted to buy them again but the price these days (around $ 100.00) was just a bit silly. So I bought a couple of Arrow guns and they're okay for a hobbyist but they just don't stand up to my kind of use. The up-side is that they take 1/2" sticks which are available everywhere.
Now 3M has an AE gun:
There are 2 ways to 'park' it on included wire stands.
Highly recommended.