If you pass through Denmark you can buy a Lebara prepaid sim with 100GB for use in Denmark, but most importantly 5GB roaming in the EU including CH and NO. it is valid for 30 days and cost 99DKK or 15US$.
You can buy as many as you like. Each comes with a designated phone number and unlimited calls and texts in EU + calls to the US (not sure how many minutes, could be unlimited but not sure)
3x prepaid Sim paggages at a total of 45$US would give you 300GB for use in Denmark and/or 15GB roaming in EU, CH and NO.
You can find sales channels here (they can be bought in stores).
Read more here:
https://mobile.lebara.com/dk/en/