Ideas for end of school friendship group present/keepsake?

[MsFogi]

DD will be leaving school at the end of summer and has the most lovely group of friends so wants to give them each a gift (same gift for each person in the group) so that they can remember their time at school together and that can be kept 'forever'. Any ideas? (One friend has already done little bracelets so that is probably out). Happy to pay up to £20 for each gift and there are five of them in the group.

for Secondary age ? Etsy has some lovely keepsake bits

Thanks yes 18 year olds - I was thinking Etsy may be useful. Just looking for some inspiration of what I could get.

Do any of them drive yet? Not the same situation but when my friends and I were made redundant one friend bought us all little crystal/glass angel charms to be hung from our car rear view mirrors, pretty little thing that I've still got ten years down the line. Or any kind of charm like that, they could hang them somewhere in their rooms if they're not driving yet.

Like this, there are cheaper/dearer versions

www.etsy.com/uk/listing/813842518/guardian-angel-rear-view-mirror-charm?click_key=ffa131294aca83e51e570c44df18e52a3cbae39f%3A813842518&click_sum=805b312e&ref=pla_similar_listing_top-2