iPod touch silicone case?

Pleny of cases are available. Search on ebay or amazon. A case listed for a 5 or a 6 feneration touch will work for the 6G. Note that the 5G case will have an extra hole on the back for the strap holder, but this should not cause any problems, An iPhone case is too thick for the iPod.

Capacity doesn't matter just gen. For 5th-6th gen any case you want will be available see through, colored, textured. Older versions might have trouble but there is always eBay, Etsy, Amazon, Walmart.

YOu will have a better time looking for an iphone case

this is the tech specs for the 5th gen touch

• Height: 4.86 inches (123.4 mm)
• Width: 2.31 inches (58.6 mm)
• Depth: 0.24 inch (6.1 mm)
• Weight: 3.10 ounces (88 grams)

and I believe the 6th gen is the same size as well

Here’s the iphone 5

• Height: 4.87 inches (123.8 mm)
• Width: 2.31 inches (58.6 mm)
• Depth: 0.30 inch (7.6 mm)
• Weight: 3.95 ounces (112 grams)

and the iphone SE

• Height: 4.87 inches (123.8 mm)
• Width: 2.31 inches (58.6 mm)
• Depth: 0.30 inch (7.6 mm)
• Weight: 3.99 ounces (113 grams)

and there are others here

https://support.apple.com/specs/iphone

My point is, iPod cases are hard to find, iPhone ones are not and both devices are very much the same size. I have my touch in a phone case. It gives you more options.

I found plenty of iPod touch cases that work with the 5th and 6th generation iPod Touches on Amazon.

Found one for my 6th gen iPod Touch that I really liked.

Good Luck to You!.