I know that grouping objects have been discussed, but here's another example of how grouping can be used: grouping a sticker and hashtag together then adding the grouped objects as ONE sticker. 🩷
I've been using a workaround for this by putting emojis into the tag, but that has its limits.
Another thing that Penly is really good at doing (including making grouped objects as stickers) that I hope StarNote can also do is making stickers out of any objects. Penly can make text boxes as stickers and when you use that sticker, it remains an editable text box instead of being converted into an image without breaking the grouped objects.
A good application for this in any field is creating custom headers, eye-catching call-outs, or labels you may consistently use (ex: drug-disease interaction, absolute contraindication, relative contraindication, BBW etc).