I used StarryOakCrystals on etsy. When I contacted them they were very friendly. I've ordered many items and mystery boxes all been lovely.
If you got a cage necklace and used small crystals they could change which ones they wore in it.
You can also get little animal carvings, ive got my dds some little pokemon/animals from my local shop. But I'm sure you could find them on etsy too.
I also recommend a book that explains the different qualities of the crystals. Also a box to store them in, dd uses a jewellery box and a selenite bowl to charge them.
Another popular item for her was a box of crystal chips from amazon to make her own bracelets.