I mostly train without lures as well. What I find works very well is to doing mini training sessions during feeding time. Basically getting fed is the reward at the end. Afterwards, when I ask for tricks not during feeding time, they still do the tricks and sometimes get treats but not always, yet they always get verbal praise and a pat or ear/belly scratch. Has worked very well here with my guys.
You can still reward with a toy or game afterwards, just give praise using your chosen wording "good girl" or "good", etc, then immediately give the toy or play her favourite game.
To teach spin without treat luring, you can teach the "watch me" command first. Then walk around her asking her to watch you as you circle around her. Or have her favourite toy and spin it over her head to have her follow the toy into a spin.
You can still reward with a toy or game afterwards, just give praise using your chosen wording "good girl" or "good", etc, then immediately give the toy or play her favourite game.
To teach spin without treat luring, you can teach the "watch me" command first. Then walk around her asking her to watch you as you circle around her. Or have her favourite toy and spin it over her head to have her follow the toy into a spin.