Just keep them in the bag they came in.
But I once made one like this:
Purchased this on Etsy:
View attachment 412805
It's hand-made from Horween leather by RobertiLeather of Texas. Measures approximately 6.3" x 1.75", and holds a nice supply of B.J. Long pipe-cleaners.
'Cept mine is navy blue and made out of premium Italian leather.
The idea was to sell them, but it never really happened.
If I could have a loonie for all the stuff I made that never sold—no, I wouldn't be a millionaire but my apartment wouldn't be as full.
Then again, I'd not take a loonie for said stuff: it's worth way more.