Start by collecting several rocks that are somewhat roundish, smooth, and ideally, can stand "up" on their own. Comb through your fabric stash and pick out any and all orange-ish patterns. If you don't have a stash, a trip to a fabric store is in order! Choose two or three fat quarters, and check the remainders bin for good candidates.
Now for the messy part. Stir together a solution of half tacky glue and half water. (I tried a mixture that was lighter on the glue, but the strips didn't hold after drying.) You don't need much, so start with just a tablespoon of each.
Here's what they look like, stem-free. I rather like them!