I use the quadrums.
 
	Another alternative are called Everslab also sold by Andy.
 
	These allow you to put a description on the label ,similar to TPGS and what i put scarce varieties in ,so as not to mix them up  
	They are obviously dearer and take up more space,so maybe order just order one of each as both sold singly and see which suits you best.
 
	Pete.