Pendants might be a task, but I can most definitely make us bumper stickers with sticker mule, I've done it for a lot of my old customers. Also, Snaptee is a very easy tool for designing t-shirts. I have a pretty dead store there, and wouldn't mind making another so members have merch to purchase.
When you look into snaptee, you will find it expensive (Like 35 bucks a shirt before shipping, and even more if you want a hoodie) but after comparing with local screenprint costs its about the same, but I live in Alaska and everything is more exspensive here. Really, these are things I have no problem setting up, but I wouldn't want to be the one handling money. Stickermule doesn't distribute by small order, but snaptee does. I'm nearly certain that snaptee pays out 10% to the designer so the shirt sells likely wont net much (Unless we sell a ton, maybe advertise outside of the forum?) but I've ordered from them before, and my customers have never complained about quality.
I know it isn't a pendant, but for many it may be enough.