Maybe try M10 - that looked great the other night.
Also try M4 - also looked impressive.
M10 and M4 are both globs.
I also looked at M12, M9 and M23 (open cluster) and the jewel box - all looked good but M10 and 4 were the pick.
Also try Eta Carinae (neb) and maybe the Orion Neb (M42) - will look grey through the scope - the colours can't easily be picked up apart from with a long exposure sadly.
For galaxies maybe M83 ?
Good to see your enthusiasm