Hi Samnater,
Unfortunately the pen and paper will be needed as there is currently no wishlist/favorite feature available on the Unreal Marketplace at this time. However, many have requested this feature enough that it is on our list of considerations. I will keep the community posted on any new announcements once I have any further updates. If you have any other questions, you can reach me on the forums under the name Reubitron.
Thanks!
Reubitron