One of the best things to sell are pet tags easy to do and a great mark up. One of the new trends is Silicone Silent Tags and here is some great news you don't have to have a CO2 Laser to do them. The S1 40 Watt does a nice job on them and they have a great ROI
Setting for the Xtool S1 40 Watt that worked best for me are (Power 100, Speed 200, LPI 140 Passes 3) On most colors. The white required 5 passes. My testing showed that under 200 Speed will damages and over burns the tag. Below are Amazon Links to bulk Silicon Tags in Various Shapes and sizes:
Bone Shape https://amzn.to/48rCrq2
Small Round Tags https://amzn.to/3V305Gz
Large Round Tags https://amzn.to/48mAZoI
Heart Shaped https://amzn.to/3IbzAGV
Pack Original Silent Hexagon Shape https://amzn.to/4bEP7wH