A product rec, for kids, elderly, disabled...

[parmanya]

Saw this item on Right This Minute, and the owners are very kind.

Stretchy silicone lids that turn any glass or cup into one with either a straw and lid, or a "sippy cup".

Highly recommend!

https://www.kickstarter.com/projects/sipsnap/sipsnap

SipSnap
SipSnap is a simple, spill-proof, kid's drinking lid that fits any cup, anytime, anywhere. Simplify your life with a Snap.

via Kickstarter

https://www.kickstarter.com/projects/sipsnap/sipsnap/widget/video.html