Like those Recon Modules and those exclamation point things at the start of Wolver Dens. With editable text. it could be useful as a signpost, like say, putting one next to a decorative energy well or something which says "This energy well is for decorative purposes only, so do not take the last 100 Energy inside". Not to mention all the funny messages you can put in one. Of course, it would filter out cusses and things like that.

Also, my GM Gvdtok came up with this idea, he just asked me to post it here. Figured if this works, he should take the credit. :P