Wedding Party & Parent Gifts — $$

My FH and I are currently trying to decide on gifts for our wedding party and parents, and we just have no idea where to start.

Some details about our situation:
— We’re having a “destination” wedding (ATL to NOLA), so attendees are required to fly/make the 8 hour drive and book a stay, but otherwise we have gone above and beyond to keep costs for everyone involved as low as possible — tailor made BM dresses under $90, inexpensive GM suit rentals, wear-the-shoes-you-have kinda thing, & we’re helping cover room costs.
— We are paying for the wedding almost entirely ourselves, & buying a home this winter, so we can’t completely break the bank on gifts, but I’d rather give nothing than gift something “cheap”. Plus our parents have helped us SO much the past 4 years, I really want these gifts to be meaningful and make everyone feel genuinely appreciated (and not just give them another monogrammed cup/bag.)
I’m considering making earrings out of real gold hoops and precious gems for my bridesmaids, but that’s all I have so far, and it’ll only cost me about $100 for all 8 pairs.
Is there a standard price point for each of these gifts? How much should we spend on the parties, and how much on our parents?
And what are some super sentimental/out of this world gifts that you all have given?