I didn't have time to read the replies, but, this was probably not mentioned.
When I was younger, what people would do is get an old lava lamp, get rid of the bottle with liquid and wax in it, all you need is the base and the bulb inside.
Get a digital thermometer (I was lucky to have access to one) and run the bulb for an hour or so then take it's temp. You may need to play around with different kelvins and wattage (fridge lights worked for me) You want it to get as close to 400 degrees as possible. If a bulb goes over 420 degrees, don't use it, if it is under 350, don't use it.
Now once you have the right bulb you need to make a that seals tight on the outside of the lamp (air intake will then pull from the bottom of the lamp, there are small openings in some older models that are perfect for breathing through. So, once you have a tight fitting dome that won't melt or break easily, fashion a piece of medical tubing in the top of the dome and put a screen filter on the end of the tube that is inside the dome. Or fill the end of the tubing with steel wool or some other filter. Just so that if things go wrong you don't breathe hot weed matter.
After that is all setup and it seems to pull lightly, get one of those tea candles and throw out the candle part, keep the little thin aluminum tray that they sit in. Round the bottom of it so it will sit nicely on the bulb. What I suggest is to chop your weed nicely and put a thin layer in the candle tray, lay it on the bulb, seal the dome back up and wait a minute or two, then start pulling slowly.
This is NOT even close to the vapes on the market these days... I did this in the early 2000's and it worked, but not well and it tasted like burnt chinese food. Without a dome I don't think you will get much of a vape experience without a vacuum being formed. Breathing it off foil or a spoon or something seems like you would waste most of it and be breathing mostly shitty tasting air.