Sorry for your loss.
You can use bio-degradable balloons but there is no guarantee they will not end up strangling birds or rendering squirrels immobile. Maybe something that could start degrading some hours after you release it? It might end up safely popped midair without ruining the lives of wildlife.
But let me just add: I think you should not do this at all. It’s too risky to do with traditional balloons, and it might be hard to find these “real/verified” biodegradable balloons, plus no guarantee they actually do what the backside says.
Religion is about shit that is not real. Linux is about good engineering and open source software.
Big fat downvote for this pathetic attempt st being provocative.