The best thing you can do is have a washi tape holder that will keep everything neat, organized and definitely easy to sort through. What's really awesome is you can actually build them entirely on your own. Check out any of these options and you'll definitely be happy with your results.
20 DIY Washi Tape Storage Ideas You Need to Control Your Stash
Washi Tape Dispensers Storage & Organization for Washi Tape
How to Make a DIY Washi Tape Dispenser
Easy DIY Washi Tape Dispenser Project from Washi Tape Crafts by Amy Anderson - Hello Creative Family
Washi Tape Adjustable 15 Grids Storage Organizer Box — A Lot Mall
Washi Tapes Dispenser from a Box
Washi Tape Organizer, Washi Tape Storage Scrapbooking Supplies Holder : Office Products
Washi Tape Storage - The Scrap Shoppe
Anthropologie Inspired DIY Washi Tape Dispenser - Sparkles of Sunshine
Anthropologie Inspired DIY Washi Tape Dispenser - Sparkles of Sunshine
Allred Design Blog: Amazing Washi Tape Storage Ideas
Craftaholics Anonymous® Washi Tape Storage Ideas
DIY Washi Tape Dispenser and Organizer! Two Methods!