Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

I removed the rubber stopper (not sure what the right term is for it but it looks like a mini nipple) from the Contigo kids cup lid to clean it, and now I…

Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

I Tested 30 So-Called Spill-Proof Toddler Cups [Winners Inside] - Two Mama Bears

Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

Contigo® Kids Spill-Proof Tumbler with Straw, 14oz

Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

Fit Water Bottle with AUTOSPOUT® Straw 32oz

Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

The 8 Best Water Bottles

Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

Contigo® Kids Spill-Proof Tumbler with Straw, 14oz

✯UPGRADE WHOLE WRAPE SLEEVES : Each stainless steel cups will come with a silicone sleeve for Non-Slip & Heat Insulated. The sleeves are upgrade to

Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

5Pack Kids Cups with Straws and Lids Spill Proof, 12oz Toddler Straw Cups with Colorful Silicone Sleeves, Unbreakable Stainless Steel Water Tumblers

Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

8 Best Water Bottles for Kids: We Test Every Bottle We Recommend!

Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

Can't get rubber stopper back into Contigo Kids cup lid. Suggestions?

Primula Set of 4 Insulated 20-oz Tumblers with Gift Bags