How to favorite or bookmark images without taking up CC library storage?

I do a lot of browing for potential images to license, and I have been adding images that I like -- and may license later but not right now -- to libraries.

However, I just tried to do this and got an error message to the effect that I was out of Creative Cloud storage. I had not realised that what I thought was basically bookmarking images to come back to later was actually counting them against my CC storage space and in effect, costing me money.

Is there any way to bookmark or favorite images without incurring a hit on CC storage space?  There so so many images available, and I usually need to look at a lot of different images before deciding on one to license, and this usually means going back and looking at ones I've previously seen in order to make a decision.

I cannot afford to pay Adobe for extra storage space just for this. I also can't afford to be constantly browsing through images I've previously thought might work for a project. What am I doing wrong here, please? How do folks manage this?

Thanks for any advice!