Here's what I did...
Since I only needed a small amount to brush on top of the bread when they were rising in their tins, a used eggshell was just perfect as a temporary container!
And then afterwards it can go back into the pile of vege scraps for the chickens, worms and/or compost! Free, natural, temporary, biodegradable, non-toxic, organic and just sitting there waiting to be used! (Wonder how long it is before someone invents a commercial version and sells it for $1.99 at K-mart?!)
Now that I've done this with an egg shell, I'm wondering what other uses they could have...
I have dried them out and fed them back to my chooks as a calcium supplement, crushed them and popped into the compost heap and also used them crushed to add calcium to my growing tomato's...
A quick Google search gives me these links-
Prairie Homestead - 30 things to do with eggshells
Good Housekeeping - 12 egg-cellent things to do with egg shells
One Good Thing - 15 Surprising uses for eggshells
Next time you are cooking eggs, see what you can come up with for using the shells in a new way!
Green-ness: 5/5 for using a biodegradable totally natural temporary container!
Frugal-ness: 5/5 for repurposing something to hand rather than buying a new gadget
Time cost: No time at all to prepare, use or throw into the compost bucket!
Skill level: Cracking and egg!
Fun-ness: Great fun to find a new use for an egg shell!