Indoor "ice" wall training

Recently started climbing at a gym with a small vertical section for ice climbing (dense white foam). Great for getting a pump with doing laps - especially after trying to clean your tools from it - but it does get boring.
Any suggestions for workouts on these types of walls? Or ways to make it more interesting? There are a few rock holds, but otherwise just the sheets of foam.

Thanks!

We just had such a foam wall in our recently closed gym. We also used some of those Ice Holdz' on the wall. An overhanging roof feature section would be fun, which you can make (like for a rock wall) out of plywood that you can repeatedly cover with spray cans of foam for the tools to catch, even though hitting the plywood underneath is no big deal. It can all be replaced pretty cheaply with a few hours of simple labor. Don't have a pic of the one we had(they tore it all out of the building after we got booted out). Don't forget to try some kind of a 'dry tool' effect or an undercling hold or two.