Well, morels are also mycorrhizal, and Stamets was at one time selling spawn for those, reportedly with inconsistent results (maybe that's why he's no longer selling the "morel kit," although he's still offering spawn for sale, at fungiperfecti.com. I think that what's holding people up in the case of chanterelles is that they grow in association with a lot of different trees, and we don't know yet what conditions are essential to reproduce for them to grow in captivity. Morels are similarly difficult, but it sounds like some people are reporting success, while others are not. A classmate of mine spread some spent mushroom
compost from a supplier in her urban garden as a soil amendment, compost in which oysters had been grown successfully but not morels, and this spring had a flush of morels. Whether they will return or not is yet to be seen.
Lactaria and Russula mushrooms are also mycorrhizal, and some of these are reportedly both edible and delicious, although others are poisonous. They're a lot more profuse than morels or chanterelles, so if you wanted to give it a shot, you could go on a mushroom hunt with someone really knowledgeable and experienced to collect a few samples of the edible species and distribute the spores in your garden and see if any come up the next year. On the other hand, some people are even trying transplanting truffles with the time consuming methods I described--it's just discouraging to think you'll have to wait several years and literally (not metaphorically) go over the ground with a fine tooth comb even to know if you've failed!
If you know your ground and your shrubs, then you should be able to find out what kinds of mycorrhizal fungi prefer that kind of habitat and associate with the other species present (and the ones you want to plant). Chances are good that a couple of these will be edible, even if not particularly sought after. Have you already done a survey to see what kinds of fungi are already present?