This could work for any nail/cuticle oil but with the gel manicure the solar oil is my favorite.

I use the solar oil several times a day and the little brush/bottle is getting on my nerves. It takes too long to dip it and I can't get the last 1/4 out of the bottle.
So I went to the dollar store and got a bottle of eye drops. The little drip cap comes off so I cleaned it out and put my nail oil in the bottle.
Easy peasy!! It takes 2 seconds now and no more contortions trying to use the last little bit!