F.B.
Not really conventional when it comes to snacking.
Here are some of the things I go for after dinner or even in lieu of dinner-
1. a green apple, with balsamic vinegar, blue cheese and sunflower seeds.
2. pretzles and pinapple salsa and cheddar.
3. a greek yogurt with canteloupe and honey.
4. a wedge or watermelon and some mozzarella.
5. bruschetta.
6. "wine water" wine with ice and water.
7. "juice water" juice with ice and water.
8. spanicopitera (spinach and feta in a fillo square).
9. baby carrots nuked with a bit of cinamon and sugar.
10. a scrambled egg with veg.
a snack can constitute anything, which is alright under your overal dietary guidelines (in your case, GF I guess). so long as it is done in moderation, and with portion in mind.
I eat mine out of an 8oz bowl. Hard to pack too many calories into that.
Good luck to you and yours,
F. B.